Patent ID: 7671286

Claim:
A device, comprising: a key having a key head, and an actuator configured to move and correspondingly change a position of the key head to a first key head position and to a second key head position, where a direction the key head is configured to move when changing the position of the key head to the first key head position and to the second key head position is perpendicular to a direction the actuator is configured to move and correspondingly change the position of the key head to the first key head position and to the second key head position, and when the key head is at the first key head position and pressed to a depressed position, the key cannot provide a connection with respect to an electrical interface, and when the key head is at the second key head position and pressed to the depressed position, the key can provide a connection with respect to the electrical interface, where the actuator is configured to move the key to the second position only when the key is relevant to an operation being performed by the device.