Your next smartwatch could be charged by your own body

Not for the cold-hearted

Your next smartwatch could be charged by body heat

Battery life is the real Achilles' heel of wearable tech right now, but it's a problem that might have just found a solution. And the key component has been sitting there since mankind began.

Researchers at the Korea Advanced Institute of Science and Technology have created a small flexible patch that converts body heat into electricity which could be used to power a wearable device.

The ability to generate power in this way is handy anyway, but the added flexibility here means it would be perfect for smartwatches and fitness bands.

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It's unclear whether this could make charging redundant completely or just help extent the battery life a bit - but we'll take anything right now.

Via Gigaom