Nectar’s sonar bottle caps could save $50B in stolen booze – TechCrunch
Bars lose 20 percent of their alcohol to overpours and “free” drinks for friends. That amounts to $50 billion per year in booze that mysteriously disappears, making life tough for every pub and restaurant. Nectar wants to solve that mystery with its ultrasound depth sensing bottle caps that measure how much liquid is left in…