vCard. Definitely a vCard. Currently, as a dev/geek, I'm relying on a Keybase.io profile link!

Or you could store some good solid keys on their for near certificate-level security in a physical device.

Ugh, I expected to get email notifications and didn't!

I got the OTA update on my Nexus 4, and I've got a pin lock in addition to the NFC ring (I'm in this for the security ;) ), but I don't even have a shaded "Smart Unlock" entry in the Settings.

I've just tried swapping to Password and back to PIN (in case it hadn't realised it is in the appropriate mode) but it hasn't changed anything. The phone has been encrypted for months as well, so I can't disable everything.

Anyone got any other ideas?

Thanks.

I want to try this out on my Nexus 4 (although I'm slightly paranoid and I'd still like to try it out and see if I can keep the 2FA - just more integrated as part of core Android), but I seem to have an issue.

To enable NFC rings as trusted devices, you have to have "smart unlock". That's supposed to be in the Security settings, but I can't find it. I've just upgraded to Lollipop today, I've also installed a Play Framework update, and I've even rebooted my phone an extra time just to make sure, but my settings just go:

⋮
Power button instantly locks
Owner info

Encryption
Encrypt phone
⋮

From the screenshots I've seen, I should have a "Smart Unlock" item in the middle of there. Did you have the Smart Unlock option from the start? Am I missing something?

Thanks.