I think there should be a central login platform, encrypted and stored decentralized that contains ALL your personal data, accessible only to YOU, inlcuding official documents, pseudonymous social network accounts, etc. But where you can choose to share certain data with other parties (like airports, border control, car rental companies, flight companies, hotel booking sites, etc), on a temporary need to know basis.
Checkin in into an airport becomes a one-click operation, no waiting whatsoever required.
So these pay to pass security solutions are a temporary evil. It will soon be a thing of the past.