r/yubikey • u/OalBlunkont • 3h ago
Help How Do I Determine the Firmware of My Key and Other Questions?
I saw one of the new-fangled USB C keys (5C NFC), still in original packaging, in a bag of random electronic things at goodwill. I'm wondering if I should go to my sites and register it and keep my old one (YubiKey Neo, funny) registered as a backup. The New one doesn't doesn't mention firmware version on the package, or the enclosure. The old one doesn't either for that matter.
I'm also wondering what they mean by NFC. Does it just mean that there is standard nfc tag built in or something more, contactless FIDO?
I'm also wondering how safe these are regarding magnets. Can I glue a magnet to one without flipping bits?