Automatic Shoe Size Scanner was designed to address common problems customers face in finding the correct shoe size. It uses infrared sensors and an Arduino microcontroller to automatically measure a customer's foot size and display the equivalent shoe size for the UK, US and Japan on an LED screen. This innovation aims to solve issues like damaged display shoes from repeated trying of sizes and time wasted searching for the right fit. By automatically detecting foot size using infrared technology, the Automatic Shoe Size Scanner allows customers to quickly and easily find their correct shoe size.