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In some cases the wireless devices require connection to a host computer by wire (usually USB) to initialize the device, and once initial setup is done, support wireless operations for all the work performed thereafter. All-in-one devices may have features oriented to home and personal use that are not found in larger devices.
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 photocopiers produce on every printed page that identifies the specific device that was used to print the document.