RFID Cards Compatible with K4 TC1 TC2 TC3 TC7 MB1 MB2 Clocking in Machine, Thin RFID Proximity Employee Badges for HapAttend H1 H2 H3 Time Clock (10 Pack)

In good news they are functional 125KHz EM4100 tags. In bad news they are NOT writable. All digital information is printed clearly on the card [see video*] Very easy to clone, very easy to emulate, not suitable where security is important. That said, all cards were unique and NON-sequential ...IE. You can't, by watching my video, predict the numbers on the other 9 cards :) *NB. The Flipper shows the long number in hex (not decimal) - but they ARE the same number However. Security aside. They are exactly what they claim to be ...So: 5*

For use with the HapAttend/NGteco etc digital punch/clocking on/off machines. These cards are pre-programmed with a unique serial number, making adding cards to users very simple. These RFID cards are hard plastic (PCV) that can be used with ID Card printers, sticky label printers such as Brother QL range. Fit regular size ID badge holders. Scans quickly and reads every time.