Access system for a structure

An access system for a structure, comprising:

• a keypad;
• an activatable open button, wherein the access unit is configured to open an access point to the structure when the button is pressed while active;
• an authentication module configured to communicate via Bluetooth with a package delivery unit when the package delivery unit reaches a predetermined delivery distance near the structure and to authenticate the package delivery unit;
• and
• an execution module configured to store one or more rules pertaining to delivery of a package by the package delivery unit and to execute the one or more rules in response to the access system successfully communicating with the package delivery unit, wherein one of the rules is to activate the activatable open button if the authentication module is able to authenticate the package delivery unit, wherein the authentication module is configured to present:
• a first authentication protocol comprising wireless, automatic electronic exchange of information;
• if the first authentication protocol fails, a second authentication protocol including requiring manual input from a delivery professional package delivery unit;
• if the second authentication protocol fails, a third authentication protocol including contacting an intended recipient of the package;
• wherein the authentication module is configured to receive a preference from a user for which one or more of the first and second authentication methods to execute.