There have been court cases already wherein, for example, a person was stopped for a DUI and subjected to a breathalyzer test. The defense lawyer in that case

There have been court cases already wherein, for example, a person was stopped for a DUI and subjected to a breathalyzer test. The defense lawyer in that case requested access to the source code of the firmware running on the breathalyzer device in order to determine if it was even a reliable source of accusatory evidence-gathering. It is under that sort of situation I imagine a law enforcement body being led to turn to Palantir to request full source code of the Palantir system, description of its algorithms, data it uses, etc. In the breathalyzer case, the source code was actually turned over and they discovered it to be of deplorable quality, with many features such as in the case of any internal failure, returning an illegally-drunk answer without otherwise indicating any fault. In another similar case, someone issued a citation for speeding by an automated camera system requested the source code for the firmware running on that system. The court greed this was a reasonable request, and they issued a court order demanding the police department turn it over. The police went to the company they got the device from and found that they had no right to request the source. They had no right to know how the system they'd purchased and were using to charge people with infractions even operated. I expect this would be what would happen with Palantir.