I have a friend who calls me occasionally to come help him with various little things having to do with the technology at his house. This week, one of his requests was to learn more about QR codes and ...

スマートフォンのカメラで手軽に読み取り可能なQRコードは、ウェブサイトへのリンクになっていたり、キャッシュレス決済で利用されていたりと、日常生活のさまざまな部分で活用されています。そんなQRコードがどのような仕組みで動作しているのかを ...

QR codes, which can be easily read with a smartphone camera, are used in various areas of daily life, such as as links to websites and for cashless payments. A page has been published that provides an ...