I've never encountered that extreme of measures in the hospital. Much depends on where you go, and I knew where to go in my city. Mine was a locked unit which didn't bother me; that just meant people couldn't go in and out. We had doors to our rooms that had to stay open; our bathroom doors could be closed, but they might knock on the door if they were doing status checks and were looking for you. Not a big deal. Safety on a unit where patients are suicidal is a must. Patients find the oddest ways to harm themselves, and a hospital treating suicidal patients that doesn't stay proactive is liable for a lawsuit.

My hospital has made changes in the last few years. They now have several different wings with varying levels of security depending on the severity of the patient's symptoms. That seems a logical way to handle this issue so that both safety and dignity can be addressed. Not every hospital has the facilities to do that, however.