Every time you look, our computers have moved closer to us.

In the beginning, they existed only in corporate headquarters. Then came the desktop PC — three feet away. Then the laptop — one foot. Then the smartphone — in our pockets. What’s next — computers on our wrists?

Exactly. As though by silent agreement, the gadget industry seems to have decided that 2013 is the year of the smartwatch.

The central idea is sound. You already have an iPhone or Android phone. Wouldn’t it be neat if your watch could communicate with it wirelessly?

Imagine: the watch could beep or vibrate whenever you get an incoming call, text message or e-mail. No more, “Sorry I didn’t get your call; my phone was in my backpack.” No more fumbling for your phone when that would be inconvenient or unsafe — like while you’re skiing, skateboarding or driving.