Hacker News new | ask | show | jobs
by panki27 671 days ago
Rolling keys is more of an RF thing, fobs are NFC or RFID (rolling key is still vulnerable to a simple replay attack).

For NFC/RFID it depends entirely on the card. You can easily clone Mifare Classic, but on newer ones there's no way I know of, and the software does not (yet) have support for Legic (which has been broken for over a decade).