We already have, and they're apparently very popular in prisons: https://www.vice.com/en_uk/article/zngpz4/prison-phones-that-go-up-your-bum https://www.vice.co

We already have, and they're apparently very popular in prisons: https://www.vice.com/en_uk/article/zngpz4/prison-phones-that-go-up-your-bum https://www.vice.com/en_uk/article/zngpz4/prison-phones-that...