It can be fully sealed for high ingress protection and has a high resistance to scratches, chemicals, liquids and other surface contaminants, such as dust, moisture, grease and oil. The PCAP screen consists of a sheet of glass with a thin film and an integrated sensor to recognize changes in its electromagnetic field which detects your finger position. PCAP touchscreens also have multi-touch technology, which is the simultaneous input from two or more fingers. This enables pinch to zoom and rotate capabilities.