I was a deputy prosecutor for 18 years. If detectives came to me with an investigation where they interviewed the suspect, and didn’t record it I would go ballistic. I would tell them, to their faces, they didn’t have an interview because no recording, as far as I’m concerned it didn’t happen. And I told them they had compromised their case. And I would tell them loud enough for the entire office to hear it. And then there would be a painful phone conversation with their supervisor, while they were in my office, where I asked why his detectives were not recording conversations with suspects. And then I would decline the case.
I only had to do this a few times.