If you want examples of pointless security-theatre, I've got a even worse example:
On of the many "security features" is the demand that passengers have a valid boarding-card in order to pass the security-checkpoint and enter the departure-area.
If, however, you're travelling with hand-luggage-only you can (here in Norway anyway) proceed directly to the gate without checking in. In this case you can either have a printed ticket, and present that at the security-checkpoint,
If you order the ticket online (90%+ of the domestic flights are booked that way) you bring nothing at all, other than the credit-card you used to book the flight.
That is right; to enter certain areas of the airport you need to either have a valid boarding-pass, or be willing to say: "I travel paperless, I ordered the ticket online."
It seems batshit insane to assume that terrorists would not be willing to lie. Yet that's the reality of it.
Meanwhile, innocent passengers are inconvenienced and costs are incurred. For example the policy prevents you from following a young child travelling alone to the gate, this job is now handled by an airline-employee.