Small device designed to induce beepilepsy in its carrier. Equipped with a context-detecting sensors, it has triggers tuned to many types of situations causing the maximum impact on the bearer:
Public annoyance: Movie theater, opera, seminars.
Private annoyance: Favorite TV show,sex
Material risk: Holding a precious Ming vase, repairing sensitive fragile things
Personal risk: driving a vehicle - by attracting attention away from the road