[Nextgrid]

What abuse are you trying to detect? I can only see payment fraud, but that can be mitigated by requiring clear payment in advance (like a deposit) and/or payment methods where the fraud liability shifts to the bank (any payment card with 3D-Secure which is now the default in Europe).

[Edman274]

Sometimes, drivers rob / assault / murder passengers and sometimes passengers rob / assault / murder drivers. Sometimes, you want to do background checks on people driving, and you want to have a way for a passenger to report something like "hey, my driver that dropped me off at my house has now been driving past my house at 2AM", and you want to make it possible to let a driver report something like "hey, my passenger threw up in my car".