In the UK these machines are notoriously inefficient especially with situations like you describe and also when you are buying alcohol or something they consider dangerous.
In Spain however I've noticed they get around this by having one person with remote access to every machine, so if there is problem with your bag or they need to verify your age it's all done from one point rather than an individual member of staff having to intervene in each case.
In Spain however I've noticed they get around this by having one person with remote access to every machine, so if there is problem with your bag or they need to verify your age it's all done from one point rather than an individual member of staff having to intervene in each case.
It's a lot better system.