Recently traveled abroad and was shocked at how dystopian moving through borders is anymore. Scans after scans of passports, fingerprinting, face scans, questions about intentions for visiting, paperwork, cameras throughout airports that are surely doing untold amounts of biometric analysis with some bullshit AI…in some of these places you get laughed at if you ask about opting out. It almost isn’t worth it.
You probably can’t fit a large enough explosive in a cell phone battery compartment to reliably crash a plane by exploding it anywhere in the passenger cabin, though that seems like more of an airport security thing than a customs thing.