Electronic combination lock with different levels of access control

A method, comprising:

• providing a mobile device comprising a display, an electronic circuit and a non-transitory memory unit;
• configuring the display with an application icon for communications with a combination lock, and
• configuring the electronic circuit to provide a wireless signal when the application icon is activated, the wireless signal indicative of a combination code for operating the combination lock at one of a plurality of access levels, the access levels comprising at least a first level and a second level, wherein
• the combination code for the second level is indicative of a permission to access the combination lock, and
• the combination code for the first level is indicative of a permission to access the combination lock an unlimited number of times and a permission to change the combination code for all access levels.

An electronic combination lock, comprising:

• an electronic circuit configured to communicate with a mobile device via wireless signals, the wireless signals comprising a communication signal from the mobile device indicative of a combination code for operating the electronic combination lock at one of a plurality of access levels, the plurality of access levels comprising at least a first level and a second level,
• a non-transitory memory configured to store a plurality of preset codes, the plurality of preset codes comprising at least a present code for the first level and a preset code for the second level, and
• a processor configured to compare a received combination code from the mobile device with the plurality of preset codes and to allow access of the combination lock if the combination code is indicative of one of the preset codes, wherein
• the preset code for the second level is indicative of a permission to access the combination lock, and
• the preset code for the first level is indicative of a permission to access the combination lock an unlimited number of times and a permission to change the preset code for all access levels.