Standing in line to yet another not-always-friendly border control I thought I'd go after a separate mini device for wiping my yubikey. Imagine a little half-a-match-box-size dongle with sort of power source (battery, high voltage condenser etc.) and a control (button, dial, biometrics?) with USB port or full youbikey body enclosure. think about it as electroshocker for youbikey (and many other dongles too I guess)
When I expect threat level escalation, I can place my key into such box in advance. Under certain conditions I'll be able to burn the keys. I'm sure if well engineered, it can be very miniature and handy. It can be equipped with all sorts of controls like well crafted button, biomentrics, PIN entry pad, etc. etc. It could lock youbikey inside (requires full body insertion) and release it after right PIN is dialed. After a couple of failed attempts, or upon a under-pressure PIN, or after certain time elapsed, it would burn the key. Plenty of scenarios... Not ideal of cause, but better than nothing.
Again, it's a separate accessory, not a new battery and button embedded youbikey. It's probably not for every-day carry in a pocket. Depending on individual paranoia level, it can rest in an office desk, in every-day back pack, or thrown into a suite case until international traveling.
Does anyone know if such thing exists and can be purchased? May be Yubico would find it commercially feasible to design and start selling this accessory? If not, I think I'll go to my old garage and assemble one... so any comments would be appreciated
Cheers!