[splendidfailure]

I read that the Sony SmartWatch also supports NFC. It would be interesting to see if a standalone smartwatch app could support NFC building entry (like a replacement for your company badge). It'd be a much nicer form factor and I'd be significantly less likely to forget it at home or at my desk.

Though it's worth noting, with August and Lockitron keyless entry systems being shipped this year, I wonder if the same can't also be accomplished with the existing BLE implementation by Pebble/others