Err... XD
What sort of devices would not be permitted onboard?
Because I'm pretty sure that Cormac is carrying at least fifty items which could be considered suspicious on his person alone.

(15 Lithium batteries, a high powered hand held dremel, a rather extensive set of pliers, a soldering iron, a huge collection of dremel heads, a highly customised, potentially weaponized smartphone, augmented reality sunglasses, custom tablet, several tiny flying robots, a sophisticated 3d scanner, a makeshift high intensity welder, what appears to be some sort of strange high powered flashlight with speakers, a potentially weaponized lighter, several magnesium fire starters, disassembled 3d printer, a metric crapton of miscellaneous electrical components, etc...)

Although none of that technically counts as a weapon, I'm pretty sure someone with a luggage full of power tools might have some problems at customs...