"PRESI" stands for a "Pretty Simple Idea". Application development for the new generation of devices (i.e. VR, AR, smart glasses, smart watches, etc.) presents completely new challenges when it comes to human-computer interaction and security. In a nutshell, a "PRESI" is a short piece of text that brings attention to a problem and provides a pretty simple solution.
To facilitate cross-references between ideas and concepts, each PRESI will be labeled with a unique butterfly-style hashtag, such as this one: presi#bestUX