USB Debugging is disabled, when im travelling. I had two such situations last week. At the first, i had enough time to shutdown and lock the device, before that. But the second time, they asked to unlock the device. I have no idea, if they can force me to do that, when a password is set, instead of only a fingerprint. But i don’t want to risk anything. Its not that i have to hide something. There is nothing on the phone what is not allowed. Only 2 VPN connections, which is not that good in China and some other countries. One for access to my home network and the other which i use in public networks.

I don’t want to have any problems with the authorities (in any country). As long as I don’t have to hand over the device, they can have a look at what’s on the phone. But I also don’t want anything to be installed that doesn’t belong there and I want to use my VPN the way I want to.

The second situation, was the first time in my travelling, when someone asked me to unlock the device. They didn’t take it with them after unlocking it (unlike the situation where it wasn’t unlocked) but I don’t see what could stop them from doing so.

That’s not the point. I travel a lot and here the phone is occasionally checked by the local authorities. I have no control over what the Chinese authorities do with the phone when they take it with them. Needless to say, I don’t plug the phone into any USB ports myself. The fact that apps from the Playstore are not affected by this is also OK, but I have installed very few apps via the Playstore, most of them are from F-Droid.

To make a long story short: There were several such situations on my last trip and I was happy that I had this “Auto Blocker” active. But it’s not a permanent solution.

Many thx. This is exactly what I want. Will try that when I’m batch from vacation.