Tag, you're it.

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

Benjamin is a business consultant, coach, designer, musician, artist, and writer, living in the remote mountains of Vermont. He has 20+ years experience in tech, an educational background in the arts, ...

We've shown you how plastic discs or tags can start timers, play music, send notifications, and more just by tapping your phone on them. It's because in these discs, are a computer chip and antenna.