Having another proof of location can be useful to defendants in a trial as well as prosecution. It's also useful to be able to say you're not at the scene of th

Having another proof of location can be useful to defendants in a trial as well as prosecution. It's also useful to be able to say you're not at the scene of the crime. While this could make the effects of bad laws worse by making them more enforceable, if you think the legal system is good as a whole, it doesn't seem obvious why this is not a good thing. It seems we'll be more likely to get verdicts matching the truth.