A portable electronic wireless lock and lock system for ensuring the safety of goods, including humanly consumable goods. The lock and lock system are controlled by a smartphone, which also acts as a communications hub between the lock and a truckload owner or supervisor. According to the present invention, a truck driver uses a smartphone to interface between a trailer payload supervisor and the payload lock itself, to ensure the safety of the transported goods and comply with regulations such as the Food Safety Modernization Act (“FSMA”). An electronic lock and lock system may, according to the present invention, interface electronically to a smartphone, so that while in motion, the smartphone ensures that the lock remains locked and controls its operation. Alternatively, such an electronic lock may be designed to permit only a limited number of locking cycles initiated by a truck driver until a loading supervisor intercedes in compliance with FSMA.