The Vatican offers a reservation ticket (QR code) to enter St. Peter's Cathedral at a timed entry for 7 Euro/person.
The description indicates:
Time: The ticket is valid for a specific time bracket. Please ensure that you arrive by the time indicated on your booking confirmation to guarantee access, also allowing time for security checks.
So, it is not a skip-the-line ticket, and with wait times for security clearance varying from 30 minutes to 2 hours, how does this reservation actually work? What benefit does it really offer if admission is free without a ticket after waiting through the same security line anyway?
Or, is this to avoid a further wait for capacity reasons after clearing the security line? What is the set up for getting into St. Peter's?