A system for disposing of medical waste is generally configured to sort waste items into a plurality of disposable containers according to applicable rules and regulations governing the handling andor disposal of such items. The method includes providing a cellular phone with a memory module configured to receive more than one removable storage medium simultaneously. In accordance with this disclosure, the FIFO memory may receive input data, temporarily store the input data, and transmit the temporarily stored input data as output data. The first format may be an unstructured data format and the second format may be a structured data format. The method comprises the steps of providing a skin conductance signal measured at an area of the patient’s skin, calculating a derivative signal of said conductance signal with respect to time, and establishing said sedation level based on said derivative signal.