My sister in-law is in an assisted living home, memory care, and when we bring her over for a meal or such I get the 'pleasure' of taking her back to 'the home'. This place of course has Locke doors and you can't get out with out the help of one of the attendants... which are sometimes hard to find at night... So, I got locked in this past Thanks Giving evening and was trying to find someone to release me.... and I looked at the sign under the key pad to the lock..... if you want to get in and no one is in the lobby you ring the door bell on the outside of the door... this is what they put on the inside where you are locked in: