Phones can be finicky...
List of compatible phones:
- Galaxy J1 (2016)
List of non-compatible phones:
- iPhone *
- there are NFC reader accessories from manufacturers such as flomio.
The xLED is designed to show how location, rotation, and orientation of our x-series transponders affects how well they will couple to the magnetic field generated by a reader.
The xLED is made with thin-walled industrial grade glass, non-biocompatible epoxy resin, and would probably not even stand up to autoclave sterilization – DO NOT IMPLANT THIS PRODUCT. Besides, you wouldn’t be able to see the LED while holding a reader to it anyway.