It's basically an electronic band you wear while you're watching TV.

The band fits around your wrist and senses your pulse rate.

When your pulse rate starts dropping off, it signals your DVR to start recording your current program so you can catch the rest of it once you wake up.

The device is being marketed by Virgin Media and was designed by - who else - a couple of teenagers!

For more on the device, CLICK HERE.

(ABC Radio News)

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