System and method for monitoring an access key from a key-box

A system for monitoring a location of an access key relative to a key box, wherein the key box includes a controller that transmits over a personal area network periodic first advertisements,

• the system including a chip attached to the access key that transmits over a personal area network periodic second advertisements,
• a mobile device configured to perform steps comprising:
• a first step of monitoring over the personal area network for advertisements,
• a second step of receiving over the personal area network the first and second periodic advertisements,
• a third step of determining whether the first and second periodic advertisements are indicative of the key being within the key box or removed from the key box;
• wherein
• when the determining is indicative of the key being within the key box, the mobile device is configured to return to the first step, and
• when the determining is indicative of the key being removed from the key box, the mobile device is configured to perform further steps comprising:
• one of a fourth step and a fifth step, wherein:
• the fourth step includes monitoring elapsed time against a predetermined time period and the mobile device is configured to provide an alert when the elapsed time becomes greater than the predetermined time period;
• the fifth step includes monitoring a distance from the key box against a predetermined distance and the mobile device is configured to provide the alert when the distance becomes greater than the predetermined distance;
• and
• a sixth step of monitoring for transmitted first and second periodic advertisements over the personal area network and determining whether the first and second periodic advertisements are indicative of the key being within the key box or removed from the key box;
• wherein
• when the monitoring is indicative of the key being within the key box, the mobile device is configured to discontinue monitoring and to return to the first step.