You might know RFID as the technology that Big Brother uses to *track your every move*. Quickly, don the [tinfoil hats](https://en.wikipedia.org/wiki/Tin_foil_hat)!!
Only kidding. RFID is useful for sensing and identifying tagged people and objects for access control, automation and a whole range of different applications. This basic RFID tag works in the 125kHz RF range and comes with a unique 40-bit ID. It is not reprogrammable.
This blank, smooth, mildly flexible RFID tag is ready for your logo (or hand-drawn scribble).
* EM4001 ISO-based RFID IC
* 125kHz Carrier
* 2kbps ASK
* Manchester encoding
* 40-bit unique ID
* 64-bit data stream [Header+ID+Data+Parity]
* 2.13 x 3.35 x 0.03″ (54 x 85.5 x 0.8mm)