Someone I used to work with left to start a business selling “phone booths“ for private mobile phone conversations in public. I believe they’re called Private T

Someone I used to work with left to start a business selling “phone booths“ for private mobile phone conversations in public. I believe they’re called Private Talking Spaces. Not sure if he’s still doing it. I thought it was a good idea but obviously there’s no financial incentive like there was with a phone booth, so they had to be purchased and installed by whoever owned the space.