[unwind]

Pretty cool.

I missed details on how the pairing works, for privacy reasons it seems desirable that the tags are locked to (preferably a set of) cell phones.

Some more information about the battery would be nice too, what counts as "usage" for the tag exactly, and do they expose any idea of the battery's state? It would be nice to know that a tag is nearing it's projected end-of-battery, I guess.

Also didn't much enjoy the example with tagging the wife's car. Bleh.

[pavel_lishin]

My first thought was, "I'd plant one in my boss's shoe, so I'd always know when he was on his way over," and realize that that's probably just about as weird and distrust-based as the wife example.

[intended]

Well at least the wife example quickly shows how this will escalate.