They could also hide bombs in dildos, small medicine containers, enema canisters, Time released food pellets, large wrist watches, cellphones, laptops, glasses frames, false teeth, jewelry boxes, shaving cream canisters, ect.
All the "protection" we get at the airport is completely worthless. How many people have tried to blow up an airplane with a shoe? Their underwear? nail clippers? 1... then never again.
Leave a metal detector in and call it good, nothing else has provided any sort of benefit to today's fliers and massive inconveniences. All to LOOK like they are doing something (not to actually do anything).