The document compares and contrasts resistive and capacitive touchscreen technologies. Resistive touchscreens use pressure to complete a circuit and were used in devices like bank machines and PDAs. They are durable but have low resolution. Capacitive touchscreens, used in phones and tablets, rely on finger proximity to sense touch and are more responsive with multi-touch detection. However, they require materials like indium tin oxide which may run out. New technologies like graphene could enable flexible touchscreens.