I rode a 300 in India a few weeks ago and at each control, had to send WhatApp photos to a group created for the brevet. Brevet card, specific location, face, all timestamped in real time. This was on top of brevet card stamps and requiring ATM receipts at a couple of control locations. Pretty intensive monitoring of proof of passage.
There's still no guarantee you didn't drive between them at cycling speed. :) Maybe in India you can get away with driving around at 20-30kph but I'd love (not really) to see someone try that here! :D
I rode a 300 in India a few weeks ago and at each control, had to send WhatApp photos to a group created for the brevet. Brevet card, specific location, face, all timestamped in real time. This was on top of brevet card stamps and requiring ATM receipts at a couple of control locations. Pretty intensive monitoring of proof of passage.