Why Can't You Show Your Teeth?

I know we are not allowed to frown or grin when taking passport photos, but didn't know we can't even show teeth!

This requirement only applies to UK passport applicants at the moment and they are told that it is to do with biometric assessment works blah blah blah...or facial recognition - whatever you like to call it.


Perhaps the real reason is that the immigration officials worldwide could be terribly frightened and nauseated by the British dental work?  But we do learn something new each day don't we?

The UK Passport Office's guide for professional photographers is very interesting, because it explains not only what the requirements are, but why.

Have a look in here.