Abstract: An attachment that may be coupled to a wireless communication device, such as a cellular telephone, personal digital assistant (PDA), or the like, to perform commercial or other information transactions, as well as to an apparatus or system for conducting such transactions. The wireless communication device generally includes an antenna that may be directly accessed by a processor in the attachment for transmission of data to a remote computer over a communication network. The attachment may also include an input device, such as a magnetic stripe reader, smartcard reader, barcode scanner, optical scanner, fingerprint scanner, proximity detector, or the like. When input is received at the input device, the input information may be sent to the attachment processor for processing and transmission to the remote computer via the antenna. The remote computer may process the received attachment-processed data and generate a response to send to the device processor.

Abstract: In an optical recording apparatus, a detecting section detects disk identification information of an optical disk for selecting a constant which relates to the detected disk identification information. A test OPC section performs test writing operation for OPC at a predetermined linear velocity prior to recording of data so as to obtain a test value. A formulating section formulates an equation expressing a target value in function of a recording linear velocity based on the constant, the predetermined linear velocity and the test value. A running OPC section performs running operation of OPC by monitoring an actual value while irradiating a laser beam for the recording of data at the recording linear velocity. A controlling section controls the power of the laser beam such that the monitored actual value coincides with the target value which is determined by the equation with respect to the recording linear velocity.