The move from read-only tracking to closed-loop intervention is not a marketing tweak. It changes what a wearable is for.

Now a new generation of devices is trying to do something the read-only wearable never could, talk back to the body.

A read-write wearable both reads your body and writes back to it by delivering an intervention.

(1) Refers to a device that can both input and output or transmit and receive. See transceiver, write and read. (2) Refers to a digital file that can be updated and erased. If a file is given ...

Microchips in RFID tags can be read-write, read-only or “write once, read many” (WORM). With read-write chips, you can add information to the tag or write over existing information when the tag is ...

A component that reads (senses) and writes (records) data on a magnetic disk or magnetic tape. For writing, the surface of the disk or tape is moved past the read/write head. By discharging electrical ...