QR codes (Quick Response Codes) were invented in Japan in 1992, and it took three years to develop a new type of encoding that holds more data than traditional barcodes, can be read 360 degrees, records both numbers and letters, and can be read even if the surface is damaged up to 30%, such as torn or stained.

        The development team has made the innovative QR code available to the public so that it can be used without the need for royalty payments. The advancement continued and marked a watershed moment in the development of new information-reading technology. There are currently 40 QR Code variations.

        The first QR Code version could store over 7,000 characters in multiple languages and is still being developed in every version. Because of the convenience and availability of a reader, that is, a mobile phone with a camera, which is already widely used by the general public, it is currently being used in many categories.

Story and illustrations: Ratchanok Thongkhaokham