The ability to prove after the fact that you were a certain distance away won't stop you from being arrested and dragged to jail, which is probably the point. F

The ability to prove after the fact that you were a certain distance away won't stop you from being arrested and dragged to jail, which is probably the point. For a low level crime, by the time you are standing in front of judge with an opportunity to present evidence, a lot of time will have passed and most of the negative consequences of being charged with a crime will have already happened to you - the trauma of going to jail, bail money, hiring a lawyer, missing work, potentially losing your job, the stress and uncertainty, having a record and everything that comes with that. Even if you had that good evidence, those charges would turn your life upside down.