Disclosed is a system for monitoring a location of a key relative to a key box, configured to perform: (i) providing access to the key by: communicating over a personal area network with a first mobile device for the first user as the first user approaches the key box in an attempt to obtain the key, obtaining first credentials from the first mobile device, determining whether the first credentials are valid or invalid, when the first credentials are valid: putting the key box in an unlocked configuration, (ii) tracking a location of the key by: communicating over the personal area network with: the key and/or mobile device to determine whether the key is being returned to the key box, wherein upon a determination by the key box or the mobile device that the key is not being returned, an alert is provided by the mobile device to the first user.