A system and method according to which one or more sliders are actuated in order to, for example, operate one or more switches such as, for example, one or more circuit breaker switches. The signature verification device receives the new signature information and verifies the delivery routes for all the items included in the selected item group based on the new signature information. A microcomputer sets a parameter corresponding to a selected mode, so that image shake is effectively corrected at 1 to 10 Hz in the all-frequency mode, image shake is usefully corrected at 0. Each mode provides the trainable transceiver to communicate wirelessly in a bidirectional manner with another remote device. Furthermore, the post-score risk assessment may approve or authorize financial transactions that generally fail standard risk assessments that use a cut-off risk score to divide the financial transactions into either approved or declined groups. A receiver receiving the optical signal detects both the converted error signal and the modulation signal, and uses the detected error signal to correct the detected modulation signal for the nonlinearity and noise effects of the optical source.