Originally Posted by
WineCountryUA
The new (PMCO) system requires you to validate your passport with a live agent on a regular basis. Initially and if you have gone a certain time period since last international flight, you will need validity at the airport and no be able to check-in until that is done. Not sure what the min time period is ( I have heard 90 days and also heard 180 days). So unless you are a regular frequent international traveller, this will be regularly occur.
I take it this has to be done at the kiosk during check-in? For example, can I just go to the airport now and show my passport, for travel later this week? (sorry for sounding dumb, it's been a while since I traveled internationally.) By the way, is it really important to have the passport number saved in United.com? It doesn't seem to want to save.