Core Insights - The article discusses the significance and functionality of QR codes in modern life, emphasizing their integration into various sectors such as retail, logistics, and personal transactions [3][4][9]. Group 1: Evolution of QR Codes - The article traces the history of QR codes, starting from the invention of barcodes, which were created to improve checkout efficiency in retail [4][8]. - Barcodes had limitations, such as one-way information recording and small data capacity, which QR codes addressed by allowing two-dimensional data storage [9][10]. - QR codes were invented in 1994 by Masahiro Hara from Denso Wave, inspired by the need for a more efficient information encoding system [9][11]. Group 2: Technical Mechanism of QR Codes - QR codes consist of a matrix symbol system based on binary coding, with 40 different versions that can store vast amounts of information [26]. - The process of scanning a QR code involves three key steps: image capture and recognition, data decoding and parsing, and instruction execution and feedback [28][30]. - QR codes have a built-in error correction mechanism, allowing them to be scanned even if partially damaged, which contributes to their widespread adoption [22]. Group 3: Impact on Data and Energy - The article highlights the astronomical number of scans occurring daily, with projections indicating that by 2024, daily transactions through platforms like WeChat and Alipay could reach 28.27 billion [34]. - This massive volume of data poses challenges for energy consumption, as data centers require continuous operation to handle the processing and storage of transaction data [34][36]. - The concentration of personal data through QR code usage raises concerns about data security and privacy, necessitating robust management practices [36][37]. Group 4: Future of Interaction Technologies - The article suggests that while QR codes are currently prevalent, emerging technologies like facial recognition and palm print payments share the same underlying principles of network and data systems [39][41]. - The evolution of these technologies reflects a broader trend of integrating complex systems to enhance everyday convenience and efficiency in daily life [43].