Wherewear underwear, a concept designed by Theo Humphries, sends a text message to the mate of the wearer if they are removed in a location that hasn't been pre-approved. There's also Timewear, underwear that keeps track of how long they've been off, and sends a warning if they've been off for longer than a bathroom trip necessitates. Snapwear takes a photo right before they're removed by sensing the light conditions.