I have asked for help on this at TOBB but I think it's getting buried in the massive integration post. Passengers there have reported that they weren't able to check in online because their passport needed to be verified by an airport employee, and this started to happen, I surmise, to PMUA customers who were "new" to the pss we're now using. A poster who seems to offer a lot of advice replied that the current pss requires verification every few months but I don't think s/he had enough info to be specific about the time interval. I hardly ever fly internationally, but when I do I want to use OLCI. Can I just use my passport as form of ID to check in (at the counter at the airport, with a person) for domestic flights when I take them every few months? I'm hoping that my passport will be verified that way, and then I'll be able to do OLCI for the 1-2 international flights that I typically take each year.