olemus
üks printeristeganograafia vahendeid, värviprindile lisatud vaevunähtavad kollased 2,5 mm vahedega täpid, mis kodeerivad prindiandmeid
= tracking dots added to printouts by some color laser printers

ülevaateid
https://en.wikipedia.org/wiki/Machine_Identification_Code
http://www.observationsblog.com/sciencetechnologyexperiments/laser-printers-and-the-tiny-yellow-dots
https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dots