Do you wear what you like? If running out of wardrobe options, you may give the 'Like Belt' a chance. The device from the creative technology shop Deep Local will let you check-in, tap and register things or people you like. This could be an ice breaker at events.
Joking aside, I could see how this sort of technology can be used as:
1- A research tool - keeping a diary of tastes and preferences by consumer groups
2- A game - getting users to move around in a scavenger hunt to uncover branded prizes
3- A mobile app - giving users the flexibility to use their phones like a scanner in a gift registry
What do you think? Any other thoughts?