It might not be everywhere, I find I have different level of success at different airports in the UK. The machines at Gatwick never have a problem with my passp

It might not be everywhere, I find I have different level of success at different airports in the UK. The machines at Gatwick never have a problem with my passport so maybe they have 'human help'. At Stansted however my passport has failed to work at least the last four times I've been through.