The 13 most WTF gadgets

From the weird to the gross, these 13 gadgets will make you wonder why they even exist.

Moto X tattoo

wtf tech moto x tattoo

What's more annoying: unlocking your phone or wearing a microchip on your arm? Motorola is betting on the former.

With its new electronic "tattoo," Motorola is taking wearable technology to a new level. The tattoo has a chip that can unlock a Moto X when they come in contact.

Motorola says the tattoo will stick to your skin for five days -- even in the shower.

- Last updated July 29 2014 01:38 AM ET

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