yeah, there's a million ways if someone really wanted to. But whoever is selling those backpacks is sure making bank, and everyone gets to pretend something was done about the problem, while the issues that caused shooters to become shooters in the first place go unaddressed. That's the real problem, is this kind of lip-service attitude about improving society while addressing none of the real systemic issues that are causing such unhappiness and mental illness in the first place. Instead they just take rights away and punish the people who do follow rules, while nothing is really any safer. Security theater.