Here’s a bulky old CRT monitor used as a touch-screen without any alterations. It doesn’t use an overlay, but instead detects position using phototransistors in the fingertips of a glove.

Whether your screen is a domestic TV or a dedicated monitor, the heat and voltage stress of driving a CRT made these devices significantly less reliable than many of their modern-day counterparts.

A CRT monitor (Cathode Ray Tube) is a glass vacuum tube screen containing a charged cathode. Like LCD monitors, each displays red, green, or blue to create millions of colors; the cathode projects ...