Logan Garbarini models the 2x2 mm sensor that monitors ingested fluids and transmits information wirelessly. (credit: Fio Omenetto, Tufts University) With this latest wearable gadget, you could really sink your teeth into tracking your diet and health. A tiny tooth-mounted sensor can wirelessly transmit radio frequency data about the foods you’re noshing, reporting on sugar, salt, and alcohol in real-time.