The current Memory Glasses prototype employs a trackpad-style pointing device with two buttons for user input and headphones for audio output. When packaged, the notebook screen is closed and inaccessible, and is not used for interaction. A software layer allows the user to interact with the system using simple unistroke gestures, and audio clips are played to provide the user interaction feedback.
The MicroOptical clip-on display, a small, light-weight quarter-resolution full-color VGA head mounted display is also used in certain versions of the Memory Glasses system for training and reminder delivery, at the option of the user.