A system is disclosed. The system has a door that selectively opens to allow access to a cavity and selectively closes to block access to the cavity, an electronic lock configured to selectively lock and unlock the door when the door is closed, the electronic lock including a user interface, computing memory having associated therewith code, and a processor communicatively coupled with the computing memory. The processor is configured to execute the code and to: receive a random code from a random code generator, program the electronic lock to unlock the door when the random code is entered via the user interface, and transfer data of the random code to a device of a system user so that the data is used to enter the random code to the user interface of the electronic lock to unlock the door.