Back إخفاء معلومات الطابعة Arabic Принтерен стеганографски код Bulgarian Codi d'Identificació de Màquina Catalan Žluté tečky Czech Machine Identification Code Danish Machine Identification Code German نهاننگاری چاپگر Persian Code d'identification de machine French Steganografia di stampa Italian Steganografia drukarkowa Polish
Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and copiers produce on every printed page that identifies the specific device that was used to print the document. Developed by Xerox and Canon in the mid-1980s, the existence of these tracking codes became public only in 2004.