The system comprising a first communication device and a second communication device, wherein when the door is locked by the first communication device, a door locked message is operable to be displayed on the first communication device and the second communication device, wherein when the door is unlocked by the first communication device, a door unlocked message is operable to be displayed on the first communication device and the second communication device, and wherein when a phone call is received by the first communication device and a message is left for the first communication device, a message leaving log data is produced.