From Nich Woolf
As a New Scientist reader who often works at music festivals, I found my imagination blending together two articles in the same issue. One mentioned an app that turns a phone into a Wi-Fi beacon that can broadcast an SOS message in an emergency (1 March, p 22). The other was about a festival stage connecting wirelessly to all the phones in the audience and making them flash their lights (p 21).
As a certified dreamer, I had the idea of someone in the crowd calling emergency services about a casualty, and all the other phones flashing to point out where the call was made from.
Burnham-on-Sea, Somerset, UK
