I once was using an iPhone alarm clock which would only stop ringing when I took a picture of a specific item that I registered before (I chose an eraser that was on my desk at that time). When the alarm triggered, the app persistently increased the volume to the max, put itself into the foreground, and did a bunch of other tricks to force me to take the picture of that item.<p>I then went on a vacation and guess what I did not bring. Took me a while and a few tries to uninstall the app. That was the only way how to stop it. Because the app always put itself to the front, I only had a small window to switch to the sprinboard and delete the app. It was not easy, and if the app had a slightly better timing it would've been impossible.<p>I understand that any officially sanctioned means to circumvent a block may be misused, but perhaps there's a good reason why the person may want to get around the block. Such as, I do not want to wake up the whole airplane that I'm on with the obnoxiously loud alarm clock because I forgot my eraser at home.