[daveidol]

What if someone has their smartphone out at the restaurant? Are they asked to put it away or leave for fear of everyone's privacy? Just because someone is wearing Glass doesn't mean they are constantly shooting photos you know...

[DavidBradbury]

If someone had their phone up and continually aiming it around the room, then you can be sure they'd be asked to stop or leave. The problem with Glass is that you cannot tell if they are or not. Rather than risk their customers being uncomfortable, they decided to be proactive and protect them. That seems perfectly reasonable.

[adamio]

It's unreasonable. If someone wants to record they will use a hidden camera. This is fake protection.