Edible Sticker Lets You Know When Fruit Is Ripe Enough To Eat

Edible Sticker Lets You Know When Fruit Is Ripe Enough To Eat
technology

A thin layer of silk and gold can detect small chemical changes in food and when scanned with your phone, will let you know if you should consume or toss.

Yi Chen
  • 29 february 2012

Scientists at Tufts University, USA, have created a high-tech sticker that lets you know when a food is edible. The sticker is made with a thin layer of gold antennae embedded in a purified silk film, and it’s flexible enough to be stuck onto any surface. When the sticker is scanned by a smartphone, it can let you know if a banana has reached its optimal ripeness, or if an egg or the milk has gone bad.

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