One would assume that's why passengers can cancel after POB. However, let's complicate it a bit more, Séan and Shawn are at a party with 1,356 other students. 16 of the students Hail0 a mytaxi between 04:03 and 04:06 all using debit cards. Séan gets in with a driver looking for Shawn. Driver presses POB so Shawn gets a notification and goes out to find the driver. When Shawn can't find the driver he cancels the job and Hail0's another mytaxi. The driver that picked Séan up tells him the job is cancelled so he has to pay cash but Séan has no cash and he's lost his debit/ATM card...