xM1 Plus + xLED Field Tester

The xM1 Plus is a “Classic S50 1k” chip emulator with writable sector 0 (including UID) by way of a “Chinese Magic Backdoor” feature. This allows you to overwrite all pages in every sector, including Sector 0, regardless of A/B key values or access bit settings.

The xLED mimics the x-series antenna coil winding, and shows you the best possible location and rotation/orientation for holding your xM1 Plus transponder up to any reader.

xM1 Plus + xLED Field Tester Kit Contents

  • 1 sterile injector assembly, pre-loaded with an xM1+ tag
  • 1 single use ChloraPrep SEPP 0.67ml applicator (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
  • 1 xLED 13.56MHz Field Tester

We are reintroducing a small quantity of fully tested xM1+ 3mm glass implants as a single, one-time run. However, unlike our other implantable products, we cannot guarantee with any certainty, the reliable operation of the silicon chip inside the xM1+. This is because the inherent nature of the chip’s design is to emulate the function of a legitimate product produced by a reputable company. As a result, the producers of such chips are not generally concerned with quality manufacturing techniques, bug detection and resolution, or customer support. For this reason, we are opting not to warrant operation of the product, and we are also limiting this offering to the fully tested stock we have on hand only. No new xM1+ chips will be produced after this inventory is sold.

WARNING: If you decide to purchase one of these units, you will do so at your own risk and without the guarantee of proper functionality nor performance as stated above. To reiterate, the only claim Dangerous Things is willing to make, is that the xM1+ chips offered are encapsulated in biosafe glass with non-toxic epoxy resin. We cannot guarantee operation of the chip in any capacity!

FOR THOSE WHO ORDERED THE xM1+ THAT WAS RECALLED, USE THE PRODUCT VARIANT “Former Purchaser” when ordering. This is tied to the special coupon code you received.  Please check the original email address you used when you first ordered the xM1+. These will being shipping July 26th.

More Details X-Series FAQ Partner Map Distributors


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More Details

WARNING:  Again, This kit definitely contains dangerous things. While the xM1+ transponder device has undergone several quality checks during manufacture and has been put through a battery of tests within our lab, it has not been tested or certified by any government regulatory agency for implantation or use inside the human body. Use of this device is strictly at your own risk.

The xM1+ kit contains the xM1+ tag and all the sterile procedure materials required to perform installation. The xM1 tag is made with a 13.56MHz ISO14443-A compliant “Classic 1k” emulator chip, which is encased in a biologically safe 3x13mm cylindrical bioglass tube. The bioglass cylinder is laser sealed and the finished xM1+ tag is tested for function before loading into the injector assembly, and the whole injector assembly with xM1+ tag inside is EO gas sterilized.

What’s so great about the xM1+ ?

Basically, for many years the MF1ICS50 1k chip was used for all kinds of applications as a “secure chip” for everything from access control to stored value cards, and used for making localized payments within closed systems like public transit and laundry services… but it’s security mechanism called “crypto1” is a simple, proprietary encryption mechanism that hardly has anything to do with modern cryptography. It has been broken for many years now, but the sheer number of systems out there that still use it means the S50 will continue to be used by legacy systems around the world for years to come. So now, you can crack the security on those cards and clone their content (including the UID “serial number”) to your xM1+!

Important Things To Know

  • 13.56MHz ISO14443A compliant “Classic S50 1k” emulator chip-set
  • Emulates MF1ICS50 1k chip with “Chinese Magic Backdoor” command support
  • 4 byte UID and all of sector 0 is writable using CMB commands
  • 10 year data retention. Rated for 100k writes per memory block.
  • Encased in 3mm by 13mm bioglass with non-toxic epoxy
  • Pre-tested and pre-loaded in sterile injection assembly
  • No “anti-migration” coating means easy removal/replacement

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 transponder


Achieving 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.

Do you have questions such as, can I get an MRI? What about airport security? Playing sports? etc. That’s understandable. The short answer to these popular questions is, it’s all good.

If you’re looking for more specific answers, we have an extensive FAQ page that deals with these and many other common 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 now included in the xM1+ Kit!

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 xM1+. The xLED can show you the best way to present your xM1+ to a particular reader by lighting up when the field coupling is strong. This video explains how it works.


Tag Testing Process, Return Policy, & Lifetime Warranty

Tag 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 compatible with the xM1+

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.
PN532 NFC Reader
PN532 NFC Reader
The PN532 reader module is an Arduino compatible RFID and NFC reader/writer module you can use to build custom projects and solutions with.
NFC Shield
PN532 NFC Reader
Adafruit has taken their popular PN532 breakout board and turned it into a shield – the perfect tool for any 13.56MHz RFID or NFC Arduino application.
Dangerous KBR1
The Dangerous KBR1 is an ISO14443A RFID/NFC keyboard wedge reader that will act like a keyboard and “type out” any tag UIDs it scans, as if someone typed the ID on a keyboard. Great for quickly reading UIDs from ISO14443A tags, making spreadsheets, and can even be used for quick and easy computer login!