The iWriter® Styli Double Ended Stylus is a must have item to keep in your pocket, bag, desk and car for use on any public touchscreen device. The coated metal barrel is available in black, white and silver offering a sleek, high end look for every brand. The pointed end is for a resistive touchscreen, which relies on the mechanical pressure made by the stylus. Similar to a credit card machine where you sign your name, many courier delivery devices such as UPS or FedEx to sign for a package, ATM & banking terminals. The round side is for the capacitive touchscreen, similar to your mobile phone, which relies on the conductivity of touch from the human body which is naturally conductive.