backdrop background code coded free pattern seamless technical texture App automatic bar barcode binary black buy camera coding computer concept data digit digital element generated ID identification identify identity information interface label machine readable matrix mobile phone New qr qr code qr-code qrcode quick quick response rectangle render response retail sale scan shop smart phone square symbol tag technology cable Morse morse code telegraph Western Union bars business checkout consumer consumerism design examine examining finance graphic illustration industry laser line lines marketing merchandise packaging protection reader retailing row scanner security selling shopping stripe striped vector