I only connect to their WiFi to email my workmates, and say "sorry I'm runnning late again, ----ing Circle line'.
They can intercept that traffic as often as they like.
They can intercept that traffic as often as they like.
They're storing a hash of your MAC address and timestamp - the idea is to log foot traffic over time.
I think this issue has been blown up somewhat by people who don't understand the technical issues.