|A Crest Book, Fourth printing, March 1961|
"First came the treadmill desk, allowing runners to work and work out at the same time. Though it seemed to be a multitasker's dream, one problem remained: reading while running.
So Yi and a team of researchers came up with ReadingMate, a device that monitors the motion of a runner's head and then adjusts text on a monitor to counteract that movement. As a result, the text appears still."
— Jacqueline Howard, Huffington Post