It seems like teachers and students could benefit from this as well. Teachers are often accused of being unfair or acting unprofessionally. Parents may not know who to believe when a teacher and a student flatly contradict one another.
Emmmm... negative operant conditioning? There's no stimulus that's being removed depending on officer's behavior. In fact, I wouldn't call it operant conditioning at all - there's no new punishment or reward here, just increased certainty that both officers' and suspects' actions will be known and provable to third parties.