Masahiro Hara, the brilliant Japanese engineer who invented the QR code, shares his journey of innovation. He reveals how a game of Go inspired his design for a new coding system in 1994. Hara discusses the evolution from barcodes to QR codes, highlighting their immense capacity for data. He emphasizes the significance of making QR codes freely accessible, which propelled their adoption, particularly during the pandemic. His pride in the impact of his creation, now used daily worldwide, shines through in this fascinating conversation.