A method for analyzing an object's movement relative to a display of a flight deck of an aircraft to prevent accidental activation of a function, the method comprising: associating a first region on the display with a first function of the aircraft, the first region having a size and location on the display that is based on a significance of the first function; associating a second region on the display with a second function of the aircraft, the second region having a size and location on the display that is based on a significance of the second function; wherein the second significance is less than the first significance, and the first region and the second region do not overlap and the size of the first region is smaller than the size of the second region, the first region being located in a remote area of the display and the second region being located towards the middle of the display; detecting a location of the object; generating a first volume that is a projection of the first region toward the object; generating a second volume that is a projection of the second region toward the object; detecting a movement of the object; dividing the movement of the object into a first part that occurs within the first volume and a second part that occurs within the second volume; and wherein interaction requirements are associated with a gesture recognition interface and enable users to interact with the system to activate the functions without making physical contact with the system, comparing the first part to user defined interaction requirements associated with the first volume and its respective function, and comparing the second part to user defined interaction requirements that are associated with the second volume and its respective function. associating a first region on the display with a first function of the aircraft, the first region having a size and location on the display that is based on a significance of the first function; associating a second region on the display with a second function of the aircraft, the second region having a size and location on the display that is based on a significance of the second function; wherein the second significance is less than the first significance, and the first region and the second region do not overlap and the size of the first region is smaller than the size of the second region, the first region being located in a remote area of the display and the second region being located towards the middle of the display; detecting a location of the object; generating a first volume that is a projection of the first region toward the object; generating a second volume that is a projection of the second region toward the object; detecting a movement of the object; dividing the movement of the object into a first part that occurs within the first volume and a second part that occurs within the second volume; and wherein interaction requirements are associated with a gesture recognition interface and enable users to interact with the system to activate the functions without making physical contact with the system, comparing the first part to user defined interaction requirements associated with the first volume and its respective function, and comparing the second part to user defined interaction requirements that are associated with the second volume and its respective function.