Well 24/7 is pushing it. Even hospitals and old people's homes don't have that. There will be many security issues connected with prison visiting. But a punitive regime (punitive for families as well as the inmates) is going to cause angst for innocent family members and will not help in the rehabilitation of the offender. There may well be unreconstructed evil bastards in prison who we all hope will rot in hell. But they are the very small minority. Most people in prison are capable of being rehabilitated and that should be the aim. Punishing families who already have the trauma of having had a family member removed for years will militate against that. We are not in Victorian times any more. And that is not to suggest that prisons should be holiday camps.