Deactivating a data tag attached to packaging for user privacy or tamper-evident reasons. In some implementations, a cross-platform presence server can be provided that allows a caller to accurately assess the availability and other similar status of a callee by evaluating a device status of a plurality of communication devices associated with the callee. The transformer T includes a primary winding Wa arranged so as to form a set with the rechargeable battery BT1, and a secondary winding Wb arranged so as to form a set with the rechargeable battery BT2. Additionally, the method includes steering a second beam-forming system to a second direction. The creating unit creates a color conversion coefficient for converting a first image signal in a first color space input from the input device into a second image signal for the output device in a second color space different from the first color space, according to the ratio between the color rendering intents and the evaluation result of the evaluating unit. A control signal is generated and fed back to the DLI based on the detected signal intensity.