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You'd need some pretty hefty antennas to trigger NFC tags at the range of watch-to-phone or watch-to-computer (say 1 to 2 metres max). Most NFC readers operate
by rhplus 13y ago
You'd need some pretty hefty antennas to trigger NFC tags at the range of watch-to-phone or watch-to-computer (say 1 to 2 metres max). Most NFC readers operate around a couple cm, maybe 10cm max. Your computer would lock every time you sipped your coffee :-(
The general idea is great though. I'm not sure what the right proximity tech would be. Someone else can no doubt chime in. Bluetooth would be overkill, NFC not enough.
- deleted 13y ago[deleted]
- jessriedel 13y agoIs there one can't just use Bluetooth instead of NFC? Does the power consumption get bad?
- danielsamuels 13y agoThe power consumption of Bluetooth is so minimal that turning off Bluetooth on an iPhone only hides the icon, it doesn't actually turn Bluetooth off.
- stbtrax 13y agodo you have a source for this?
- roc 13y agoI was thinking NFC tag-to-watch to trigger limited-interaction sorts of prompts on the phone and then bluetooth from the watch to the phone for relaying the indicated data or firing actions or whatever. (bump watches, each watch gets a 'send contact' prompt, watches broker a bluetooth contact card transfer from respective phones) And as for the computer/lock thing, I was thinking Bluetooth. Someone might have to rig up a custom profile for it, but they'd have to do OS integration and awareness anyway. So it's not so much more a roadblock.