Is there a doorbell that can be used for rented space like an apt where you cannot drill holes in the walls? If you live in an apt how can your visitors let you know they are there, other than messaging you? What if the person doesn’t have their sk or blackberry or other phone on them and are in a different part of the apt? I don’t like to just walk in, (including hearing friends homes that I have known forever) and if the door is locked I cannot let them know. If I have waited for a while I will walk in but if I don’t see them I will stomp on the floor to let them know I am there. Luckily no one lives below them! LOL
