Comment by regularfry
12 days ago
Cynically, it's so they can sell you another bottle on the secure side. If they spend money to give themselves a working mechanism to distinguish water from not-water, they lose the ability to create retail demand.
12 days ago
Cynically, it's so they can sell you another bottle on the secure side. If they spend money to give themselves a working mechanism to distinguish water from not-water, they lose the ability to create retail demand.
I understand the idea, but it's not completely true: I empty my bottle before the security check, and fill it after in a fountain.
Then you have successfully circumnavigated a problem that more forgetful people will run into head-first. It doesn't have to catch everyone for the shops who are tenants on the secure side to complain about lost sales.