The framing here is a bit off - councils aren't really trying to ban a specific product called "pervert glasses" or anything like that. What they're doing is tightening rules around recording devices at pools, which is sensible given how easy it's become to hide cameras in everyday objects. Smartglasses, hidden cameras in sunglasses, those tiny spy cams you can get online - they're all getting cheaper and smaller. A council banning them isn't novel; it's just catching up to reality.
The safeguarding angle is straightforward. Pools are vulnerable spaces where people, especially kids, are partially clothed and in a relaxed state. If someone shows up with glasses that have a hidden camera, staff can't easily tell if they're recording or just wearing specs. Rather than trying to police the tech itself (which is impossible - how do you visually distinguish a legit pair of specs from one with a camera?), councils are basically saying no recording devices period, and asking staff to watch for suspicious behavior or people acting strangely around change rooms and shower areas.
It's worth noting this isn't just about high-tech spy gear. Phone cameras have been the real problem at pools for years. Someone puts their phone down "accidentally" pointed at the wrong area, or claims they're taking a photo of their kid but the angle's suspicious. The council approach tries to create clearer rules so staff have something to point to when they spot dodgy behavior. Whether it actually stops anything depends entirely on how consistently they enforce it and how aware staff are trained to be.