Beginning in 2019, Kantech is no longer manufacturing fobs that look like this:  XSF (01) 78:6430   All fobs now look like XSF 0285:14638, and require a software upgrade to activate.  

Should you wish to continue using the original configuration, without a software upgrade, we can offer you our RapidPROX® for Kantech fob.  It looks the same, works the same, and has the same LIFETIME WARRANTY as the genuine Kantech fob - and less expensive too. Click on the lady below. 

Upgrade your access control system with the highly durable Kantech ioProx P40KEY Proximity Key Fob. Designed for seamless integration and everyday convenience, this 125 kHz proximity key tag easily attaches to any standard key ring, providing a reliable, photo-ID-free solution for secure entry. Built to withstand harsh environments, the ultrasonically welded ABS shell makes the P40KEY highly resistant to cracking and breaking. For maximized security, each fob is dual-encoded with the industry-standard 26-bit Wiegand format alongside Kantech's proprietary Extended Secure Format $XSF$, which boasts over four billion unique codes to guarantee zero duplication. Whether you are managing a commercial building or an educational facility, the Kantech P40KEY delivers consistent read ranges and uncompromising security for your access management needs.