Designing passive tracking apps as if women have pockets big enough to hold their phones is a perennial problem with an easy solution: include proper pockets in women’s clothing (she types, furiously, having just had her phone fall out of her pocket and smash on the floor for the hundredth time). In the meantime, however, women use other solutions, and if tech developers don’t realise women are being forced into workarounds, they may fail in their development.

