Device and system for controlling secure key access using an internet-connected key box device

A system for remotely controlling and monitoring key access, comprising:

• a structure or vehicle having a flat surface on which to mount a key box device or at least one fixture on which a key box device may be placed;
• a lock;
• a key;
• a visitor needing key access, wherein the visitor has at least an identifying phone number;
• an owner or agent controlling and monitoring key access;
• a cloud computing software application;
• a call center that takes inbound calls;
• a key box device, comprising:
• a display that may show text messages
• a removable chamber for holding a key;
• a key to be placed in the chamber;
• a locking mechanism configured to lock or release the chamber;
• a cloud computing software application that enables wireless communication
• a circuit board coupled to the cloud computing software application
• an antenna for receiving and transmitting wireless signals;
• a subscriber identity module (SIM) card;
• a power source
• a granting of key access when at least the following steps are performed:
• the visitor's phone number, anticipated check-in time, and anticipated
• check-out time are registered into the cloud computing software application;
• the key box device is activated at about the anticipated check-in time;
• the key box displays a number for the visitor to call;
• the visitor calls the displayed number on the visitor's registered mobile communication device;
• the cloud computing software application verifies the incoming call number matches the registered visitor phone number;
• the cloud computing software application commands the key box device to release its key chamber;
• and
• the key box device releases its key chamber.