There was a brief time in the early 2000s when we carried cellphones, wallets, keys, and a bespoke digital media player loaded with a small selection of our music libraries. Devices like iPods, Zunes, ...

RFID tags are normally used for pedestrian tasks like tracking shipping crates or opening doors to workplaces we’d rather be absent from, but they can also be cool and fun. [hoveeman] demonstrates ...