The most obvious effects of technology on humans are direct influences on the human body and gestures. The decision making faculty is short cut. To-the-hand interaction proceeds by bodily contact or affection of the senses. The hand is used to symbolize this.
The three exemplary effects are: coercion, embodied technology, and subliminal affect.
To design is to throw obstacles in other people’s way, said Vilém Flusser. Indeed, fences and gates determine where people can and cannot go. Coercive technology often decreases freedom and user experience. But it may also afford a very natural interaction. Think of operation by touch and gestures.