alt Hacker NewsAnd? There’s a lot of things that people could theoretically do. The few seconds that someone is going through event security isn’t going to stop a competent attacker, nor is it reasonable to expect them to be able to do that.
The point is to stop the most common attackers who are sloppy idiots.
No incompetent person could feasibly use a Raspberry Pi to do any harm, and I invite you to find any examples to the contrary. It is easier to abuse a phone.