This is short on info -- but are we talking about a verification process that is separate to the "passport check" which Ryanair requires for all non-UK/EU passport holders?

Unlike many other UK/EU budget airlines, Ryanair requires a passport check to issue your boarding pass... and this kind of sounds like that?

If this is the "passport check," I wouldn't be surprised if Ryanair is doing it to avoid the check-in lines at the airport. They are particularly cost and efficiencies focused, after all.