Abstract: A validated receptacle security system which utilizes a variety of anti-theft sensors, easy-to-use user interfaces, identity and/or package verification systems and methods, alarm and/or alerting systems and methods, and at least one controllable locking mechanism to provide a safe, secure, and monitored receptacle, such as for package delivery and pick up. Embodiments provide a system and structure for (1) secure delivery and pickup of items while positively monitoring the internal and external environment of a secure receptacle (including providing photographic evidence that an item has in fact been deposited into the secure receptacle), (2) taking action to preserve that environment while activating locking mechanisms in response to validated delivery and pickup transactions, and (3) activating alerts and alarms, and activating or deactivating other circuits and devices, in response to theft or tampering events.