Smart hat senses when traffic lights change and tells you via an app
Long-lasting hats, jumpers and watch straps that function as smart devices can be made thanks to a cheap and reliable method of creating conductive fibre that can be woven into fabric
![Smart hat senses when traffic lights change and tells you via an app](https://images.newscientist.com/wp-content/uploads/2024/01/31125005/SEI_189331490.jpg)
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