How much time do you spend with the people you love? That's the question that Concepter wants you to ask yourself with its off-beat wearable, the Soul time tracker. Its hardware couldn't be simpler -- just a black-and-silver wristband (or a keyfob) with a bluetooth chip inside and a battery that's good for a year. It's innocuous enough that I'd have no issue wearing it. But it's the software for the band that's interesting here. See, the Soul app keeps tabs on other Souls you meet, logging how long you spend with the various people in your life, and prompting you to do something about it.