The "Square Eyes" insole has two small buttons, one that tracks how many steps a child has traveled and one that converts it into television watching credits.
LONDON, England (CNN) -- A London-based student has designed a shoe insole that can monitor and control how much television a child watches, based on how much exercise they do in a day.
The insole does this by communicating with a "base station, " an intermediary device between the button in the shoe and the television set, which uses a radio signal to calculate and transmit the information.