A new way to show if you’re over the limit

Clever idea wearable

DermaTec’s alcohol detection patch is worn directly on the skin, much like nicotine patches worn by smokers. The difference is that, instead of releasing a product into your body, it changes colour depending on the amount of alcohol that has been drunk. From white to very dark blue, the patch moves through a range of shades of blue, allowing you to tell at a glance when you need to book a cab or get a lift with a friend. www.derma-tec.com

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