Abstract: The present invention provides for a key and bolt lock device. The key is constructed in a housing shell to be received by the head of the bolt. The key includes a power source, typically a battery, and a transmit coil which is capable of transmitting both energy and data from the key to a receiving coil in the bolt. This energy and data transfer is usually conducted by magnetic coupling. The key also includes a memory device for storing security codes which are used to compare to security codes stored in the bolt as well as a device for retrieving and transmitting the security code, typically an 8-bit microcontroller. The bolt has a body which is operatively associated with a head of the bolt so that the head rotates on the body when the bolt is in a locked position. The bolt also includes a latching device which is capable of attaching the head of the bolt to the body of the bolt so that the head and body may be rotated together.