Are you trying to find spy pen among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling spy pen on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 30 hours of research and did 80 spy pen tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best spy pen you can buy today
![SIRGAWAIN 1080P Body Camera Pen [Upgraded 2024] – Body Cam with HD Video or Picture Taking, SD Card Storage, and Manual Control for Privacy Compliance](https://m.media-amazon.com/images/I/51S0dknB+zL.jpg "The 8 Best spy pen of %currentyear% 42")
- Ultimate Camera Pen – The SIRGAWAIN camera features motion detection and a simple one-click system to record Full HD video or capture high-quality pictures easily. (Micro SD card not included)
- Portable Design - Small enough to fit into a shirt pocket, clip onto a notebook, set on your desk, and use in various settings such as offices, schools, colleges, universities, meetings, conferences, and more.
- Plug and Play – Compatible with Mac and PC devices, this powerful camera features a simple USB plug-in and USB reader for effortless data transfer.
- Fast Rechargeable Battery – Equipped with a long-lasting internal lithium-ion battery, this camera provides up to 70 minutes of continuous recording on a single charge.
- Multi-functional Pen – Beyond its capabilities as a camera, this pen can also be used for taking notes, jotting down schedules, making it a versatile tool for any occasion.
![SIRGAWAIN Mini Spy Camera Hidden Camera Pen 1080p & 64GB Micro SD - [Upgraded 2024] Small Nanny Cam Spy Pen Camera Full HD Video or Picture Taking - Secret Camera with Wide Angle Lens, Rechargeable](https://m.media-amazon.com/images/I/51JZfkGPFrL.jpg "The 8 Best spy pen of %currentyear% 44")
- Ultimate Spy Camera Pen – The SIRGAWAIN mini spy camera uses a simple one-click system to let you record HD 1080p Full HD video or pictures.
- Discrete, Portable Design – The wide-angle hidden camera is small enough to fit into a shirt pocket, clip onto a notebook, set on your desk, and use in an office, school, college, university, meeting, conference, or anywhere
- Plug and Play – The nanny camera works with Mac and PC devices and features a simple USB plug-in and USB reader to transfer data.
- Fast Rechargeable Battery – This pen with a camera features a long-lasting internal lithium-ion battery that provides up to 70 continuous minutes of recording.
- Pen Use – Along with its use as a camera this pen can be used for taking notes, jotting down schedules, or remembering important information.
- ⭐HD 1080p Spy Camera: This mini Hidden Camera pen provides HD 1080P videos and pictures.Long press the top button of the pen the camera boots up and starts recording the video into 64GB memory built-in the device. The hidden camera pen generates a 1080p color HD video at 30 FPS. Double-click the top button in standby to take a 4032 * 3024 photo.
- ⭐Hidden Spy Camera Pen: Camcorder Portable Pocket Covert Camera clipped on a notebook or shirt, Body Camera pen perfectly fitted with a discreet miniature Lens, can not be found or identified as a hidden camera. It’s built-in 350 mAh battery, fully charged for up to work 150mins.
- ⭐Easy to use: It is very easy to use because it has only one action button and goes out of the box without any complicated setup or configuration. Recording starts automatically after pressing the button and stop while you press the button again. You can connect to a computer via USB or a card reader to view the video files.
- ⭐Hidden camera pen package included: The hidden camera pen*1, ink refills*5, card reader*1, data/charging cable*1, to the highest manufacturing standards with a free 64GB internal memory included. It's a wonderful Spy Gear for Business and Conference.These are just current Cost-efficient price.
- ⭐Reliable After-Sale Service: 12 months manufacturer's technical support, 30 days money-back service, ensures long-lasting enjoyment of your purchase. If you have any questions during the process of setting up this spy hidden camera pen, please send an email to us and we’ll try our best to guarantees your 100% satisfaction.
- 【FHD Spy Camera Pen】Equipped with an HD camera, this spy pen camera delivers crisp, detailed video or pictures, ensuring you never miss a moment. Its dependable performance guarantees consistent video quality, even during extended use.
- 【Easy to Use】Simplicity is key. Just a single button press starts and stops recording, making it effortless to use. And will automatically save the video.
- 【Versatility & Multi-Purpose Utility】From business meetings to educational training to home surveillance, this pen camera adapts to your needs. It functions as both a writing tool and a recording device, making it a practical addition to your daily arsenal.
- 【Ultra-long battery life】The built-in high-capacity lithium battery provides a long enough video recording time of 200 minutes. Ideal for use in schools, offices, conferences, universities, or other places(Via Amazon no audio policy).
- 【Camera Pen Includes】Camera Pen*1, 64GB SDCARD*1, USB Data/Charging Cable*1, Replaceable Refill*5, Pin*1, Instruction Manual*1
- 【Quality Assurance & Lifetime Warranty】We stand by the quality of our products. Each pen camera is rigorously tested to meet the highest standards. If you have any questions, please contact us in time and we will patiently help you solve all problems.
- Smart Chips - hidden camera detector with smart chips is more powerful, intelligent and sensitivity allows the anti-spy detector with a strong anti-interference and wider detecting range which making the spy camera finder working more accurately to protect your privacy. It is perfect for capturing important moments and memories.
- Multi-function - High quality hidden device detector with 5 level sensitivity adjustment allows a wider detector range, other item functions like Wi-Fi detector model, all band and channel model, infrared model with 4 infrared LED light, silent model, let everyone’s privacy be protected.
- Wide Application - Lightweight and portable hidden camera detector equipped with upgraded ultra-sensitive chips could lock the monitoring position and find the disassembly position quickly and efficiently, making the monitors nowhere to hide. It can be clipped onto a notebook or shirt pocket, making it hard to notice. Suitable for the place like home, fitting room, hotel, conference room, car and office etc.
- Easy to Use - Size of the spy camera finder is 5.5*1.2*1 inch small and lightweight, it is expertly designed and easy-taking, very convenient for daily use, beep and silent mode options suitable for different usage scenario.
- Long Stand - This bug detector is equipped with smart, upgraded chips and rechargeable lithium battery, it is automatic shut down when not working over 3 minutes allows battery of anti-spy detector lasting for a much longer time.
- Magic Ink: The pen writes invisible ink that becomes visible when the cap is turned on and the light is on.
- Safe and Odorless: The ink is harmless and odorless, making it a great toy for kids.
- Fun Party Favors: Write messages on gifts for birthdays, Halloween, Christmas, and more with the pen and light.
- 5 Reusable Pens: Each package includes 5 pens with built-in lights, so the fun never stops.
- Professional Service: We provide fast and friendly customer service to help you with any questions or concerns.
- 【Simple operation】 One-button operation, the button on the top of the camera pen can control taking pictures and recording videos. Press once to enter video recording mode, press twice quickly, wait for 2-3 seconds, the blue light flashes once, and the photo is taken successfully
- 【1080P Spy Camera Pen】The pen has a built-in 30FPS, 1080P camera, which can clearly capture the lens when taking pictures or recording, high-definition picture quality, and record the details of daily life
- 【Super Long Working Time】The hidden spy camera has a built-in 340mAh battery, which can work for 150 minutes after being fully charged. Support recording while charging. A 32G memory card can be inserted for loop recording, and new content will automatically overwrite the oldest file when recording
- 【Wide range of application】The camera pen has writing function and has a pen clip, which can be clipped in an inch shirt pocket or a notebook at will. The 2mm hidden lens can be easily recorded in any place, it is your best life partner
- 【Finally】 We pay attention to honesty and trustworthiness and pursue the best service for customers. If you are dissatisfied during use, please tell me that we will serve you wholeheartedly
- 【Clear HD Quality and Delicate Images】: The secret surveillance HD pen is equipped with a 1080p HD camera, which provides clear and detailed images and videos, allowing you to capture the details of every important moment.
- 【Loop Recording】: Secret surveillance stationery supports loop recording function, automatically overwriting old recordings to ensure there is always enough storage space.
- 【Multi-function and portable design】: The portable high-definition camera pen combines portability and practicality. It is not only a regular pen, but also has multiple functions such as photo taking, and video recording, allowing you to capture important moments anytime and anywhere. It is portable and practical.
- 【One-button operation and sophisticated design】: The hidden camera pen provides one-button operation, simplifying the use steps and making it more convenient for users. It's well designed and features great features to ensure you can operate it easily and get great performance.
- 【Complete After-Sales Service】: We provide comprehensive after-sales service, including returns, refunds and return and exchange policies, to ensure your satisfaction after purchase. No matter what questions or concerns you encounter, our professional customer service team will provide timely help and solutions.
- ✅【PREMIUM SPY CAMERA PEN】This hidden camera pen is designed in a pen shape, very lightweight and easy to carry, convenient for you to carry it anytime and anywhere. It can be clipped in a pocket, in a folder, or kept in a pen holder. The small spy camera was filming with its lights completely out, making it difficult to see. Can be used for home security, babysitting, pets, professional monitoring, indoor monitoring. It can meet all your monitoring needs.
- ✅【Hidden Camera 1080P FHD】-This mini spy pen camera can record clear video at 1920* 1080P, 30fps. Videos (AVI format) will be stored in the folder in 5-minute segments. Simply connect the small hidden camera to your PC using the provided USB-C cable to play and edit them. The micro-SD card does not need to be inserted and removed repeatedly to avoid card damage. (MAC recommends using VLC media player.) Chromebooks are not compatible.
- ✅【240MINS BATTERY LIFE】This spy pen with camera has two built-in fast rechargeable lithium batteries, which can provide up to 4 hours of continuous work, while traditional pen cameras can only work for 70 minutes. Battery operated, no wifi security camera. Reminder: Please fully charge the pen camera before each use.
- ✅【64GB MEMORY & SIMPLE OPERATION】This stealth camera has 64G large-capacity storage, which can store a large amount of shooting materials, ensuring that you will not miss any important content. The top button of the hidden camera pen is used to turn on and off and start and stop working, which greatly simplifies the operation.
- ✅【LIFETIME WARRANTY】- GIAOQ enthusiastic service team will be with you. If you have any questions about this camera, please email us directly, we will reply you within 12 hours and try our best to help you solve the problem.
- 【Hidden Camera Pen-No Audio】The lens is perfectly hidden in the pen and comes with a slider to obscure the lens. When you're not recording video, you can use it as a smooth writing pen, and several replacement refills are included. The camera supports a maximum of 32GB mini micro SD card (not included), please note the direction of the card insertion.
- 【Photo & Video】The spy camera pen has the function of taking pictures and videos. When starting the photo function, try to keep the camera steady to avoid blurred photos. It can record clear videos and if the video files fill up the SD card, the camera automatically overwrites the oldest ones with the newest ones to achieve loop recording.
- 【Easy to Use】Photo mode and video mode are simply switched according to the indicator. After recording a video or taking a photo, you can view the file very simply. Using the included cable to connect the spy camera pen directly to your computer or using the included card reader are both very convenient ways to do that. It is best to download VLC media player to view the video files in case there is a black screen.
- 【Portable for Many Occasions】This hidden camera pen does not have WiFi capability, so it works both indoors and outdoors. You can put it in a pen holder in your study or bedroom, or write and record video or take pictures at the same time during a meeting or class. If it's for outdoor use, then you can clip it to your shirt pocket.
- 【Perfect After-Sales Service】We provide 7/24 pre-sales and after-sales services. We provide return and exchange services for products within six months, just for customers to have a perfect shopping experience. The product comes with a detailed user manual for reference.
- 【Features of Spy Pen Camera】This spy camera captures 1080P full HD videos at 30FPS or 12MP ultra-clear photos with crystal clear quality--a great option for hidden cameras. Its one-button system and 32GB high-speed SD card make it easy to use and store recordings. Use it as a nanny cam or hidden camera for home security--it goes undetected in your pocket or on your laptop.
- 【Long-lasting Battery Life & Portable Design】With its long-lasting high-performance lithium-ion battery, this spy pen camera provides up to 90 minutes of continuous recording when fully charged--perfect for those who need a discreet way to record important information. The portable design is small enough to go undetected and clip to a shirt pocket or be used on a desk.
- 【No WiFi Needed & Complicated Setup Required】This mini camera requires no WiFi, app, or complicated setup, which makes it both simple to use and accessible to anyone who needs to use it. Simply use the one-key video and photo-taking function and watch the delivered recordings on your PC or Mac. This spy camera hidden camera is perfect for anyone looking for a spy cam that is easy to use.
- 【Practical Recording Pen Design】In addition to its body camera functions, this spy camera pen also has a sleek and stylish design, and can be used as an actual pen for taking notes, jotting down schedules, or recording important information--a great feature for those who need both a recording pen and a secret camera. It comes with 5 ink refills, so you don't have to worry about running out of ink.
- 【Excellent Customer Service & Comprehensive Package】The supplier provides friendly customer service and offers a 30-day money-back guarantee as well as an 18-month warranty or replacement for the mini spy camera. The package includes the hidden camera pen, a user manual, USB cable, ink refills, screwdriver, eject pin, card reader, and a 32GB SD card--everything you need to get started with your pen camera and recording pen.
- Hide the Secret Message You Write: This magical invisible ink pen allows you to write down your secret information and hide it,Once Write down your secret message with this invisible ink pen,Wait a moment,The words or patterns you write will disappear,You can turn on the light on the pen's cover and reveal the secret of the secret message.spy gear for kids
- Invisible Ink Pens with UV Light: Harmless and tasteless ink, healthy toy for your kids! Smooth and colorful disappearing inks on t-shirts, paper! Permanent but washable! you can easily host a kid's birthday party favors stocking stuffer, treasure hunt,escape room,Valentines Day Gifts or classroom activity complete with invisible ink clues!
- Great Gift for Fun Party Favors: This invisible Spy Pen can write your secret in the sticky note.Parents can buy it for their kids party at home. Kids love using this kind of pen to keep their secret and play detective spy games. Schools, teachers can buy it for students for a school activity. Add it for any surprise gift bag or as a kids stocking stuffers.
- Package includes: 28 PCS invisible ink pens with built-in UV lights. Batteries included and installed.they each had a pull tab to save battery life.Be careful with small items: children over 3 years.
- Confirms to ASTM D-4236.BUY WITH CONFIDENCE: At SCStyle, we consider our customers as our top priority. Please contact us if there is any problem.
- CREATIVE INVISIBLE INK PEN - With these amazing magic pens, kids can write their secret messages on paper that can only be discovered by shining the pen’s UV light on them, which can provide many moments of creativity and fun! Elevate those spy games at home with this outstanding spy pen set!
- COMPLETE SET OF SPY PENS - This top secret UV pen set includes 28 pens with 7 colors to choose from: blue, black, red, pink, yellow, green, or purple! All inks are invisible and UV LED lights are purple. Equipped with exquisite packing, it’s an amazing gift for kids or friends.
- SUPER FUN PARTY FAVORS - These glow in the dark party supplies are an ideal and unique kids party favors sets for boys and girls age 3+. Perfect spy gear for games like the escape room, detective games, riddles, skin tattoos, etc. Whether you’re looking for a game for your kids or organizing a spy party, this invisible ink pen set will provide hours of entertainment.
- SAFE & PERMANENT MAGIC PENS - GIFTINBOX invisible ink pens use harmless and flavorless ink, which is permanent and washable. You can use it on paper, cloth, wall.. even on the skin! Disappearing ink pen glows in the dark, kids will love to paint themselves!
- PERFECT GIFT IDEA - The invisible spy pen set is the ideal gift for Valentine’s Day, birthday, classroom prize, wedding RSVP, or goodie bag stuffers for boys and girls. Teachers can use these magic pens as exchange gifts, which will definitely be a huge surprise for the students! With an exquisite package, the person who receives this special gift will definitely be pleasant!
- Spy Pen:The ink is invisible after you write with it,unless you light on the cap blacklight to see the secret message perfectly.
- Invisible Ink Pen:Harmless and flavorless ink,healthy toys for your children!Smooth and colorful disappearing inks on T-Shirts,paper,skin and any surface!Permanent but washable!
- Halloween Party Goodies:Perfect for the RSVP's to wedding invitations;Goody bags for kids spy party;Make a fun party favor;Great goddie bag treat and brings you an amazing variety of fun applications.Birthday Gifts,Halloween Gifts,Christmas Presents for kids and friends( Individual Packed).
- Permanent Fun:Batteries included.Please BE CAREFUL with small items:Children above 3 years.
- Brand Guaranteed:Please contact us if there is any question or problem,our professional customer service team is always here for you.
![SIRGAWAIN Mini Spy Camera Hidden Camera Pen 1080p & 64GB Micro SD - [Upgraded 2024] Small Nanny Cam Spy Pen Camera Full HD Video or Picture Taking - Secret Camera with Wide Angle Lens, Rechargeable](https://m.media-amazon.com/images/I/51gm-VcGQWL.jpg "The 8 Best spy pen of %currentyear% 71")
- Ultimate Spy Camera Pen – The SIRGAWAIN mini spy camera uses a simple one-click system to let you record HD 1080p Full HD video or pictures. The camera records video-only and doesn't record sound or audio.
- Discrete, Portable Design – The wide-angle hidden camera is small enough to fit into a shirt pocket, clip onto a notebook, set on your desk, and use in an office, school, college, university, meeting, conference, or anywhere
- Plug and Play – The nanny camera works with Mac and PC devices and features a simple USB plug-in and USB reader to transfer data.
- Fast Rechargeable Battery – This pen with a camera features a long-lasting internal lithium-ion battery that provides up to 70 continuous minutes of recording.
- Pen Use – Along with its use as a camera this pen can be used for taking notes, jotting down schedules, or remembering important information. Recorded video without sound (Via Amazon no audio policy)
- 【Mini Spy Camera】 1080P FHD hidden cameras, which can be used to shooting videos (Via Amazon no audio policy) & taking pictures. It can also be used as a writing pen.
- 【Camera Pen】One-button switch design is easy to use. Operate video shooting and camera mode with one button. A body camera with a pen clip, which can be clipped to a shirt pocket or notebook.
- 【Motion Detection】Spy hidden cam pen will record a series of within 3 minutes videos automatically when any movement detected, which saves more storage space than Loop recording mode. Loop Recording,hidden cam pen continuously records a series of 10 minutes videos and overwrites the oldest card files when full.
- 【Built-in 64GB Internal Memory】The hidden camera pen built-in a 64G card.The spy pen can be used directly after received. No need to buy another storage card.You won't waste your time and energy to buy memory cards. Support up to 256G TF card(Includes 64GB Card)
- 【Spy Camera Pen】This spy pen with camera features a long-lasting internal lithium ion battery than provides up to 70 continuous minutes of recording. The TKQTZ pen hidden camera works with Mac and PC devices and features a simple USB plug in and USB reader to transfer data.
- Invisible ink - After writing, the ink will be invisible, unless you turn on the light on the cap to see the secret information perfectly
- Safety - your child's healthy toy! Suitable for T-shirts, paper, skin and any smooth, faded ink surface, permanent but washable
- For children - suitable for children's birthday gifts, holiday gifts, children will be very happy
- Warm reminder - children under 3 years old do not use, the product contains small parts
- Accessories - our pen comes with a battery, no need to purchase additional batteries, the insulating sheet between the batteries can ensure that the electric pen you receive is fully charged
- 【FHD Spy Camera Pen】Equipped with a Full HD camera, this sleek spy pen camera captures detailed video or photos, ensuring you never miss a single, crucial moment. Its dependable performance guarantees consistent, high-quality video recording, even through extended use, making it the perfect companion for covert surveillance, home security, or simply capturing life's unexpected wonders.
- 【Easy to Use】One button, done deal! Start and stop recording with a single tap, and your videos are automatically saved.
- 【Versatility & Multi-Purpose Utility】From business meetings to educational training to home surveillance, this pen camera adapts to your needs. It functions as both a writing tool and a recording device, making it a practical addition to your daily arsenal.
- 【Ultra-long battery life】The built-in high-capacity lithium battery provides a long enough video recording time of 200 minutes. Ideal for use in schools, offices, conferences, universities, or other places(Via Amazon no audio policy).
- 【Camera Pen Includes】Camera Pen*1, 64GB SDCARD*1, USB Data/Charging Cable*1, Replaceable Refill*5, Pin*1, Instruction Manual*1
- 【Quality Assurance & Lifetime Warranty】We stand by the quality of our products. Each pen camera is rigorously tested to meet the highest standards. If you have any questions, please contact us in time and we will patiently help you solve all problems.
How to choose a good spy pen
Does the idea of finding a fantastic spy pen make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in spy pen. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top spy pen products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top spy pen on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top spy pen brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top spy pen based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the spy pen were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good spy pen, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your spy pen.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting spy pen for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our spy pen. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what spy pen should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on spy pen.
