Password in tattoo

The electronic tattoo shown off at a conference this week. This photo is taken from BBC.

Always forgetting your password? Tech company Motorola is working on some rather unusual solutions!

They've unveiled an electronic 'tattoo' that sticks to your skin. It has a circuit so gadgets can identify you.

Another experimental idea is a password pill you swallow - that transmits a signal to devices outside the body.

The pill doesn't need batteries because it's powered by stomach acid - but Motorola bosses say it won't be on sale any time soon.