This is an interesting complaint by privacy experts, that biometrics are being used to force targets into a heavily-manipulative shooting pen.

…the real purpose of the verification process is to prevent online travel agencies from setting up accounts to buy and subsequently re-sell Ryanair flights on their websites. If customers book their flight elsewhere, they won’t spend any additional money on hotels, insurance, airport transfers or rental cars with Ryanair – but book these extra services with a travel agency. In this respect, Ryanair and travel agencies are competitors. By requiring biometrics and alike, Ryanair seems to seek a competitive advantage in a business to business fight by throwing user privacy under the bus.