Not sure how it's brilliant. Secondly, it still suffers from that fact that literally everyone is creeped out by a rando staring at them with two cameras. At least a phone is halfway obvious when in use.
I live in Thailand and having occasional locals who literally eye-ball fuck you without blinking because it's so novel for them to see a foreigner, I can tell you that someone just staring at you is creepy, regardless of their age.
- You have to visibly tap the glasses to record
- People don't usually wear sunglasses indoors or at night (Corey Hart excluded)
- You're probably overestimating the amount of people that actually care if they get snapchatted