I have the Trusted Traveller with TSA Precheck. Very useful in the US.
Shopping mazes do my head in. Although I have bought stuff but I have usually researched the prices first. The travel size stuff can be handy.
People are their own worst enemy. As we know, the 100ml stuff hasn't changed, removing laptops etc isn't new and nor is removing jackets etc.
But folks still approach the machines like it's just fallen from the sky.