A synchronized control method for a three-phase three-level boost-type rectifier with reduced input current ripple and balanced output voltages is disclosed. Sampling means sample the filtered signal and store an actual sampling value ) and a previous sampling value ) of the filtered signal. The computer system gains access to a computer resource using a communication mode and a second protocol stack. The levels of the analyte at the area of skin are analyzed to determine if a condition associated with the analyte is present. In response to retrieving the location information, the activation system is connected to the remote location.