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neuaer toothtagStartup NeuAer demonstrated some cool, almost science fictional technology for your smartphone today at the Launch conference in San Francisco.

The company has an Android application called ToothTag, which allows users to tag objects to create certain interactions. It operates via the radio signals given off by various gadgets, including BlueTooth devices. So you could use ToothTag to set up a trigger that would send an alert to your smartphone whenever your child (or, more properly, their phone) gets too far from where they’re supposed to be, or whenever your ex-boyfriend or girlfriend gets too close.

And it sounds like ToothTag is just a showcase for NeuAer’s technology. The long-term goal is to allow mobile developers to build various proximity applications using NeuAer’s ProxPlatform technology.

The obvious question is, of course, how well will the technology work in the real world. The other issue is that NeuAer doesn’t yet work on the iPhone. That could be a barrier to adoption, and it’s also frustrating for me, because I want it.

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