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Soon, forgetting your watch could not only make you late for work—it
might stop you from working altogether. Ensure Technologies in Ann Arbor,
Michigan, and California-based watch manufacturer Golden State International
have clubbed together to make watches that unlock your computer when you
approach it and lock it again when you walk away. Each watch contains a tiny
radio transmitter that beams a password to a receiver on the computer. If the
receiver doesn’t detect the password signal, it triggers a program in the
computer to lock the keyboard, screen and mouse. According to Ensure you can set
it to work when you’re anywhere between one and 12 metres away.