Without our App (Download: Apple Store / Google Play) and the unique homeowner access codes, a person is unable to gain entry into the unit. Made from high quality poly-carbonate, the unit is extremely sturdy making it extremely difficult to break into. Once the package is inside the unit’s tray, there are multiple sensors that sense a package being deposited, thereby retracting the tray and locking the unit. You, the owner have encrypted access through the app to gain access and retrieve the package.