xEM RFID Tag [T5577 Emulator]

  • xEM tag – 125kHz ISO11784/785 ATA5577 RFID chip
  • 2x12mm cylindrical biocompatible glass casing
  • Compatible with EM41xx, HID ProxCard II, and Indala systems
  • Clone EM41xx IDs, HID ProxCard II, and Indala IDs to the xEM
  • Read/write tag emulation and cloning features
  • Works with many hobby, OEM, & commercial RFID readers

More Details X-Series FAQ Partner Map Distributors


SKU: 851294007011 Category:

More Details

WARNING This kit definitely contains dangerous things. While the xEM transponder device has undergone several quality checks during manufacture and has been put through a battery of tests with various private labs, it has not been tested or certified by any regulatory agency for implantation or use inside the human body. Use of this device is strictly at your own risk.

The xEM Kit contains the xEM tag and all the sterile procedure materials required to perform installation. The xEM tag is made with the 125kHz ISO11784/785 ATA5577 chip, which is pre-programmed in EM41xx/EM4200 compatible mode and encased in a biologically safe 2x12mm cylindrical bioglass tube. The bioglass cylinder is laser sealed and the finished xEM tag is tested for function before loading into the injector assembly, and the whole injector assembly with xEM tag inside is EO gas sterilized.

The xEM is a great starter tag for people just getting into RFID projects. It is compatible with many inexpensive OEM and commercial 125kHz readers and stand-alone access controllers. Click here for a list of compatible products.

xEM Standard Kit Option

Kit Contents:

  • 1 sterile injector assembly, pre-loaded with an xEM tag
  • 2 single use ChloraPrep SEPP 0.67ml swabs (video)
  • 1 sterile gauze pad for post-injection wound care
  • 1 sterile expandable-fabric adhesive bandage
  • 1 pair of non-sterile, non-latex procedure gloves


RFID Bundle Kit Option

Kit Contents:

  • 1 xEM Standard Kit as detailed above
  • 125kHz xLED Field Tester
  • RFID Diagnostic Card

Why You’d Want This

Get the xEM implant kit plus our xLED field tester and RFID diagnostic card bundled together! Our diagnostic card will tell you all about the frequency and duty cycles of random readers you encounter in the wild, while our xLED field tester will show you the best position and orientation to present your xEM implant to any compatible LF reader.

This bundled value represents 25.3% or $23 discount off the retail price of $91 if these items were purchased separately!

 RFID Complete Bundle Kit Option

Kit Contents:

  • 1 xEM Standard Kit
  • 125kHz xLED Field Tester
  • RFID Diagnostic Card
  • xEM Access Controller

Why You’d Want This

Get the xEM implant kit plus our complete RFID bundle. Our RFID diagnostic card tells you the frequency and duty cycle of any random readers you encounter in the wild, while the xLED shows the best position and orientation to present your xEM implant to any compatible LF reader. In only a few minutes you can build an access control project with our xEM Access Controller to let you open your room, house, or garage door with a wave of your hand.. or with a little more tinkering, unlock your car or even start your motorcycle!

This bundled value represents 28.7% or $33 discount off the retail price of $115 if these items were purchased separately!

Important Things To Know

xEM Tag Specifications
  • 125kHz EM41xx/EM4200/HID/Indala compatible ATA5577 RFID chipset
  • Full datasheet for the Atmel ATA5577 chip
  • Pre-programmed in EM41xx mode with a 40 bit unique ID
  • Encased in 2.1mm by 12mm bioglass with non-toxic epoxy
  • Pre-tested and pre-loaded in sterile injection assembly
  • No “anti-migration” coating means easy removal/replacement
How/where are x-series tags installed? Aftercare? What to expect?
hand nervesOur 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. The reason they are installed in the hand has to do with the extremely short read range of x-series tags and the typical use case being some form of access control where the tag must be presented to a fixed reader of some kind. The suggested placement within the hand was chosen due to the lack of major nerve bundles or blood vessels running through that area.

Piercer installing x-series transponderAchieving a safe installation definitely requires a steady hand 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 this product. If no partners are available in your area, you should be able to follow this guide to finding a professional in your area who is willing to assist you.

For aftercare information and what to expect, please read our X-Series FAQ page.

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.
Practical read range/performance expectation
magnetic-fieldPassive RFID and NFC tags are magnetically coupled devices that power themselves and communicate data over a shared magnetic field the reader generates. This means their effective read range and performance depends entirely on how well the antenna coils of both the tag 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 mobile phones, 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 label tags, credit card style tags, 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 tags. Most mobile phones and reader devices have a “sweet spot” or two that must be located and used each time to get consistent results. Other devices, such as the Samsung Ezon electronic deadbolt lock, sometimes use wire wound coil antenna loops inside, which work much more reliably with small glass tags like our x-series tags. You should not expect your USB reader or mobile device to achieve the same read range with our x-series tags that you normally get with a label tag or card style tag. Here are some example videos detailing typical read performance and how to find that “sweet spot”.

The xLED can help!
The xLED is a signal diagnostic device that mimics the 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. This video explains how it works.
Click here to order the xLED-LF (125kHz).

Tag testing process, return policy, lifetime warranty
Testing Process
Our x-series tags come pre-loaded inside injector systems with steel needles and cannot be read while inside the needle. Because of this, 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 tags and cataloged those tests here.

Return Policy
All sales of this product are final and no returns will be accepted. We keep tight control over chain of custody on this through manufacture, sterilization, and shipment. We would not want to re-sell something that has been returned, and you probably wouldn’t want to buy one either… so before you purchase, do your research and be sure you know you’re getting the correct product, know it’s compatibility/performance/limitations/etc.

Lifetime Warranty
If you do purchase one of our products and experience a failure, we offer a full lifetime warranty on all of our products. You will need to return the product for testing and analysis, and if it is malfunctioning, we will ship you a replacement free of charge.


Products from Dangerous Things that Complement the xEM

xLED Field Detector
xLED Field Detector
The small cylindrical shape of x-series transponders can sometimes cause difficulty getting a reliable read with certain readers. The xLED is a diagnostic tool for testing different reader antennas to find the best position and orientation for your xNT. The xLED can show you the best way to present your xNT to a particular reader by lighting up when the field coupling is strong.
EMLA Anesthetic Patch
Anesthetic Patch
This anesthetic topical patch completely numbs an area of skin approximately 1 inch in diameter and allows pain free x-series installation.
xEM Access Controller
xEM Access Controller
The xEM Access Controller is a stand-alone reader module with internally stored and managed “authorized” list. It can read xEM tags in EM mode and if the ID is authorized, an output wire goes +12v high.