imagine an app that is sort of like a panic button. You get pulled over, you open the app and hit the button which then (depending on your preferences), starts recording/streaming video and audio, locks the phone, and maybe starts recording accelerometer/gps data, etc.
It would need to be thoroughly developed/tested before actually it could be ethically recommended.
What do you think? Good idea? Bad idea? unfeasible? Already existing?
Is it illegal to film police where you are? If it’s not illegal then just use your camera app. You can probably configure it so that you can open the camera app from the lockscreen without a password, but then of course make sure you can’t e.g. access anything from your gallery from the camera app. I have always just used my camera app to film police. There also used to be “secret recording” apps for Android at least, but I believe modern Android security doesn’t allow for that kind of app behaviour anymore.