I've even watched parking enforcement sit and wait for five or so minutes to start issuing the ticket and the driver came out and said they had only just stopped in for a second.
No idea how it works elsewhere but it looks like the officers have some sort of device that they take a picture of the vehicle doing whatever they are doing incorrectly, which is kind of the opposite of what this app is for. I imagine it records time and location as well for the same reasons and Fixed which is to keep people honest.
I find this interesting because even though there is a market for this tech to the people receiving tickets, there is also a market to help improve the way tickets are given by enforcement. Though of course there may not be incentives to improve when $$ is at stake.