JollyRancher If you store a password on a piece of paper and the police find the paper and enter the password without you actively doing anything then it isn't you who destroyed evidence.
Really, so you have arrested a potential terrorist and they have an electronic device on their person, you have seized it, its in your hand in front of you, now do you press buttons to guess the password and potentially disappear in a huge explosion to only reappear as red mist raining out of the atmosphere into the crater that used to be the ground you were standing on, or do you just leave it the fuck alone place it in a container and get a lab to look at it, after it has been expertly assessed for explosives, etc..
Were talking real word here not NCIS on the TV.