Barrier pointing (also "edge pointing") is a term used in human–computer interaction to describe a design technique in which targets are placed on the peripheral borders of touchscreen interfaces to help increase motor articulation. Barrier pointing is part of a broader category of research on the ways interaction changes on the design of the physical edges of GUI touchscreens in surface computing. The ways in which barrier pointing are multifarious and include the use of barrier targets (or barrier widgets), buttons.