Resistive – Resistive touchscreens are composed of two adaptable sheets coated that has a resistive material and separated by a microthin air hole. When Call is built for the surface area of the touchscreen, The 2 sheets are pressed with each other, registering the exact area in the contact. : https://interactive-whiteboard68901.total-blog.com/new-step-by-step-map-for-interactive-whiteboard-59374236