Patent ID: 8665607

Claim:
A method of operation of an anti-eavesdropping device, the anti-eavesdropping device being constructed of materials to minimize transmission of electromagnetic and/or audio signals from an exterior of the device to an interior of the device and from the interior of the device to the exterior of the device after the device is in a closed state, the method comprising: generating a noise signal in the interior of the device to minimize reception of at least one of an audio signal or an electromagnetic signal from an exterior of the device to an interior of the device after the device is in a closed state; generating a noise signal in the interior of the device to minimize transmission of at least one of an audio signal or an electromagnetic signal from an interior of the device to an exterior of the device after the device is in a closed state; and supplying power to an electronic device in an interior of the device during a period when the device is in a closed state.