Most people think touchscreens sense pressure or heat. But the real answer of what is technically going on… is way more interesting. Your phone uses what’s called a capacitive touchscreen. Under the glass is a hidden grid of transparent electrodes that creates an invisible electric field. So here’s the big question: how does your finger trigger it? Because your body conducts electricity, your finger changes the local capacitance basically how much charge that spot can hold. The system measures that disturbance instantly and knows exactly where you touched. That’s why your finger works, but a pen or most gloves don’t they’re not conductive. And it’s also how multitouch works: the grid can detect multiple changes at the same time, which is why pinch-to-zoom feels effortless. Older phones sometimes used resistive touchscreens that relied on pressure, but they were slower, less precise, and couldn’t do multitouch. So every tap, scroll, and pinch isn’t pressure or heat… it’s your bod...