Interesting - here in Oz the vibrating device is on the face above the push button. I'm not sure whether it's easier to locate if you're blind/vision-impaired a

Interesting - here in Oz the vibrating device is on the face above the push button. I'm not sure whether it's easier to locate if you're blind/vision-impaired and thus actually need it, but it's certainly a bit more obvious for sighted folk.