NExT RFID + NFC Chip Implant

  • NTAG216 13.56MHz ISO14443A NFC chip
  • T5577 125kHz RFID chip (preprogrammed EM41xx 40 bit ID)
  • 2x14mm cylindrical sterile bioglass implant
  • RFID Diagnostic Card included!
  • 125kHz X Field Detectors included!
  • 13.56MHz X Field Detectors included!
  • *Free shipping of your entire order if you get a NExT!

*Free shipping for qualified orders. Check our shipping policy for more info.

More Details X-Series FAQ Installers



More Details

WARNING This kit definitely contains dangerous things. While our x-series chip implants have undergone several quality checks during manufacture, and have been put through a battery of tests, they have not been certified by any government regulatory agency for implantation or use inside the human body. Use of this device is strictly at your own risk.

Maximize hand real estate with the NExT dual frequency chip implant! If you want the benefit of having both a high frequency NFC chip implant and a low frequency RFID chip implant, then the NExT is what you need! The NFC side of the NExT is an NTAG216 chip that works with 13.56MHz NFC capable smartphones, certain ISO14443A commercial access control systems, certain door locks, and USB contactless ISO14443A readers. The low frequency RFID side of the NExT is a 125kHz T5577 emulator chip that can behave like many different common low frequency chip types, including EM41xx, EM4200, HID 1326 ProxCard II, HID 1346 ProxCard III, and Indala access cards and keyfobs. Check out our video explaining how the T5577 works.

Important Things To Know

If it’s going in your body, you should learn about things like performance expectations, installation procedure, first steps after installation, etc.

Practical read range / performance
Passive RFID and NFC chips are batteryless, magnetically coupled devices that power themselves and communicate data over a shared magnetic field that the reader generates. This means their effective read range and performance depends entirely on how well the antenna coils of both the chip and reader couple with each other. This typically means the shape, size, and orientation of both antennas must be complimentary.

Unfortunately, most reader devices, including NFC enabled smartphones, typically have antennas designed with thin PCB traces made into blocky rectangular shapes that lay along a flat plane. These antenna designs are great for coupling with and reading large flat labels and access cards which also share this antenna shape, but they have a hard time coupling to the very small cylindrical antenna coil inside our x-series chip implants. Most mobile phones and reader devices do have “sweet spots” that must be located and used each time to get consistent results. You should not expect your USB reader or NFC enabled mobile device to achieve the same read range with our x-series chips that you normally get with an NFC label, sticker, or card.

Locating the “sweet spot”
Not only is the correct location of a sweet spot necessary to find, but also the correct orientation. The best performance is achieved when the x-series lays across the antenna pathway of the reader antenna coil so the length of the x-series chip implant is perpendicular to the reader antenna coil. To help find an effective location and orienation to get the best read performance for your x-series chip implant, we created the X Field Detector. This diagnostic device mimics the cylidrical x-series antenna coil winding and shows you the best possible location and rotation/orientation for holding your x-series transponder up to any reader by lighting up when the field coupling is strong enough to power the LED inside. Watch this video to understand how to use it.

How/where are x-series chips installed? Aftercare? What to expect?
Our x-series transponders are typically installed into the webbing between the metacarpal bones of the index finger and thumb, resting parallel to the index metacarpal. They should be at least 5mm away from any bone or other implants to avoid possible impacts. The reason chip implants are usually installed in the hand has to do with the extremely short read range of most small chip implants. In the case of access control where the chip must be presented dirctly to a fixed reader of some kind, the hand is easily able to be properly positoned in front of the reader. To find out more about common installation locations of the hand, visit

Achieving a safe installation definitely requires skill and experience performing aseptic procedures. Dangerous Things prefers our customers locate one of our professional body piercing or body modification partners to complete the installation of our products. If no partners are available in your area, you should be able to follow this guide to finding a professional in your area. For aftercare information and what to expect, please read our X-Series FAQ page.
Testing process, return policy, and lifetime warranty
Testing Process
Our x-series chip implants come pre-loaded inside injector systems with steel needles, and because of this they cannot typically be read while packed inside the needle. This is why we perform a full test on every x-series tag before it is loaded into the injector assembly and sterilized. We have also conducted several tests on our x-series chips and cataloged those tests here.

Return Policy
We offer a 30-day money back guarantee! Read all about it on our return policy page.

Lifetime Warranty
If you do purchase one of our products and experience a failure, we offer a full lifetime warranty on all of our implant products. You will need to return the product for testing and analysis, and if it is determined to be malfunctioning, we will ship you a replacement free of charge. Read all about it on our warranty policy page.
NTAG Chip Security
Why is this important?
The NFC chip inside this product is an NTAG family chip from NXP. This chip type was designed for use in more typical NFC applications such as smart posters, labels, and other disposable use cases where the memory contents would typically be written and then locked so it could not be changed. This is done using built-in “lock bytes” which are OTP (one time programmable). That means that once the lock bytes are turned on to protect memory blocks, they can never be unlocked. Once any memory block is locked, it will forever be read-only, which is not ideal for a chip implant. Also, many common NFC smartphone apps and software applications offer ways to “lock” or “protect” your tag, making it very easy to accidentally lock your xNT as read-only. Because of this, we have disabled the ability to change or set the lock bits in the NTAG chip inside this product.

In addition to lock bytes, the NTAG offers a 32bit password protection function. It can be used to password-protect just writing to or both reading from and writing to the user memory space of the NTAG chip. Regardless of what some NFC smartphone apps indicate, it is not possible to remove or disable the password, it is only possible to set the password to the factory default hexadecimal value of 0xFF 0xFF 0xFF 0xFF. If the password is not changed, and is set to the factory default, then anyone could easily authenticate, change your password, then write data or change protection options for your chip implant to lock you out of your own chip. Because of this, we set a default password value of 0x44 0x4E 0x47 0x52 which is ASCII code for DNGR (some older batches of NExT chips have the password 0x4E 0x45 0x78 0x54 which is the ASCII code for NExT).

Finally, many of the critical configuration bytes used by NTAG chips are stored in the last few pages of the chip’s memory. This means that it may be possible for an NFC application that does not properly detect or honor the memory schema of the chip to accidentally attempt to write NDEF record data (the data you’re trying to store on the chip) overtop of the configuration bytes. For example, if the data you are attempting to write is longer than the memory pages available, the remainder of the data might be written overtop of configuration bytes, which contain settings that are potentially dangerous to modify. Accidentally writing to those memory pages could result in your chip’s configuration being irreversibly locked. Because of this, we password-protect the configuration bytes from being able to be written to or updated by using the password feature of the NTAG chip. Your chip implant leaves our factory with the entire user memory space still fully accessible and writable, while at the same time the protect the configuration bytes and password values from being accidentally or maliciously overwritten.

Once your chip implant is installed, you’ll be able to use any NFC smartphone app to write data to the tag and not need to be afraid of accidentally locking the tag, or changing the configuration bytes, or someone maliciously locking your tag or changing your password. We suggest using NXP’s TagWriter app.
Can I get an MRI? What about airport security? Playing sports? etc.
You have questions! That’s understandable. The short answer is; it’s all good. If you’re looking for more specific answers, we have an extensive FAQ page that deals with many of the most commonly asked questions regarding installation of our x-series transponders.
NExT Technical Specifications
The NExT chip contains two completely separate chips in a single implant. Both chip antennas in the NExT are specifically tuned to accommodate co-operation within the same chip implant device. The NExT’s common technical specifications are:

  • Encased in 2.1mm by 14mm bioglass with non-toxic epoxy
  • Pre-tested and pre-loaded into sterile injection assembly
  • No “anti-migration” coating means easy removal/replacement

NTAG216 13.56MHz NFC Type 2 chip

  • 13.56MHz NXP NTAG216 ISO14443A & NFC Type 2 chip
  • Full datasheet for the NXP NTAG216 RFID/NFC chip
  • 7 byte UID and 886 bytes of user read/write memory
  • 10 year data retention. Rated for 100k writes per memory block.

T5577 125kHz RFID emulator chip

  • 125kHz Atmel T5577 RFID emulator chip
  • Full datasheet for the Atmel ATA5577 chip
  • Can emulate EM41xx, EM4200, HID ProxCards, Indala (and more!) 125kHz chips
  • You can clone common 125kHz work badges, key fobs, etc. to the T5577 chip!
  • T5577 chip is preprogrammed in EM41xx mode with a 40 bit unique ID
  • Watch a video about the T5577!

NExT Standard Kit

The NExT Standard Kit contains the following products and materials, which are designed to enable you to bring the kit to a professional installation partner for installation.

  • 1 sterile injector assembly, pre-loaded with NExT dual chip implant
  • 2 single use ChloraPrep antiseptic wipes
  • 1 sterile gauze pad for post-installation wound care
  • 1 sterile expandable-fabric adhesive bandage
  • 1 pair of non-sterile, non-latex procedure gloves

NExT Standard Kit Extras

The following accessories also come with the NExT Standard Kit. These accessories are “field detection” tools designed to assist you with identifying the type of readers you may encounter, but also the best location and orientation to present your NExT chip implant to any reader to get reliable performance.

  • 1 RFID Diagnostic Card
  • 1 125kHz X Field Detector
  • 1 13.56MHz X Field Detector

Our X Field Detectors (XFD) will show you the best position and orientation to present your chip implant to any readers of the same frequency, while our RFID Diagnostic Card will tell you all about the frequency and duty cycles of random readers you encounter in the wild.

A review of the RFID Diagnostic Card & X Field Detector devices


NExT Deluxe Kit Extras

In addition to all the products and materials included in the NExT Standard Kit, the NExT Deluxe Kit also includes the following products.

xEM Access Controller
KBR1 Password Example

Why You Want It
The NExT Deluxe Kit adds our most popular accessories to the NExT Standard Kit, providing you immediate access to the practicality and versatility of having both types of versatile chips in your NExT implant. For use with the xNT end of the NExT, we include our Dangerous Keyboard Reader 1 (KBR1), which acts like a USB keyboard that “types out” the UID of ISO14443A chips it reads. No drivers. No nonsense. With the xEM end of the NExT, we include our plug and play xEM Access Controller which can read and store 125kHz EM mode chip IDs as well as work with other 125kHz EM41xx/EM4200 based tags, keyfobs, access cards, etc.
This bundled value represents a $61.50 discount off the retail price of $246.00 if these items were purchased separately!