Passengers clearing immigration in Frankfurt airport are given copious opportunity to feedback about the quality of service via this relatively lengthy form.

Jumping over to China – passengers arriving in Beijing airport can give immediate likert feedback on an electronic feedback tool – tricky to get a photo since its in Chinese immigration but very similar to this in the Gulangyu branch of the Bank of China.

For each mechanism: the motivation and satisfaction that comes from giving feedback; the extent that satisfaction is affected by immediacy; the likelihood that the feedback affects an outcome; and given that the opportunity to give feedback can engender the passenger with a degree of control, the extent to which the actual feedback is irrelevant i.e. the feedback mechanism is the message.

Japan immigration has just started photographing and fingerprinting foreign visitors. Welcome. Really.