Following on from a previous article on toolbar icon design we're going to tackle it's Big Brother, the Application Icon. The two serve slightly different functions within the program but adhere to the same idea. While we could start on an existing application, we’re going to embrace vaporware and produce an Icon for an Application that doesn’t exist. This is simply to show the process. This tutorial will follow the construction of an Icon for an imaginary application called “Keyfob.” We’ll say that it’s an application for locking and unlocking the Mac remotely. This is partly inspired by a process where someone managed to put their Mac to sleep using a mobile phone.