[arghwhat]

> Then maybe install the strobe lights in all important rooms

What are important rooms?

> Most people have there phone on silent/vibration anyway and recently everybody uses noise-canceling headphones outside to not be bothered by other people...

> Everybody is handicapped part of the time

A phone on silent still blasts public safety warnings at full volume. A phone on vibrate can still be heard. Noise-cancelling headphones still let the outside through at a lower volume.

Very different scenario.