Lately, my work has me flying frequently on commercial airplanes. Most of these flights offered seatback entertainment, so I could watch a TV show or movie of my choice, or listen to satellite radio while reading. Touch-screen controls are easy to use because they let me touch—or tap—the item or the control that I want, to select a program, adjust the volume, skip to the next song, and so on.
One thing I’ve noticed is that about ¼ of seatback touch screens are poorly registered. By registration I mean that the system and the user agree on where the user is tapping or touching the screen:
