> I suspect under the hood their systems just strips out all non-alpha characters and compares that (i.e. 'onetwo' == 'onetwo'). That would be the MRZ version.

> I suspect under the hood their systems just strips out all non-alpha characters and compares that (i.e. 'onetwo' == 'onetwo'). That would be the MRZ version. The identity page of your passport has a blob of monospace text at the bottom that's used as the 'canonical' version of names for most or all air travel systems.