Proxmark3 vs Kantech ioProx

Earlier today we released a patch into the Proxmark3 community for initial support of the LF 125kHz ioProx tags from Kantech.  Current operations are FSK-demodulation and card/tag cloning. Not much is revealed about this type of tag, and only limited data can be found on its data sheet.  Kantech state that readers/cards are compatible with standard 26-bit Wiegand and Kantech Extended Secure Format (XSF). But it is difficult to find…