キャッシュレス決済の筆頭としてPayPayやLINE PayといったQRコード決済が日本においても普及し始めていますが、QRコードがどのように生成されているのかを知る機会は多くありません。「Creating a QR Code step by step」は、好きな文字列を表すQRコードを簡単に生成 ...

QR code payments such as PayPay and LINE Pay are beginning to spread in Japan as the first cashless payment, but there are not many opportunities to know how QR codes are generated. 'Creating a QR ...

For the longest time we’ve been using UPC bar codes to store strings of information in a compact space on both product labels and people in dystopian sci-fi movies. But as our needs grew and became ...

Software built into the cameras on iPhones and Android phones make quick work of decoding QR codes. How do you do that on a laptop or desktop computer?