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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.
This is how the printer's key may appear in the first print run of a book. In this common example numbers are removed with subsequent printings, so if "1" is seen then the book is the first printing of that edition. If it is the second printing then the "1" is removed, meaning that the lowest number seen will be "2". [3]
A UPS tracking number, for domestic packages within the United States, will usually start with "1Z" followed by a 6 character shipper number (numbers and letters), a 2 digit service level indicator, and finally 8 digits identifying the package (the last digit being a check digit), for a total of 18 characters.
Key takeaways. Receipt-scanning apps allow you to scan and digitally save your receipts using your mobile device. Once you have your receipts in a digital format, you can use the data for expense ...
Some publishers, such as Ballantine Books, would sometimes use 12-digit SBNs where the last three digits indicated the price of the book; [12] for example, Woodstock Handmade Houses had a 12-digit Standard Book Number of 345-24223-8-595 (valid SBN: 345-24223-8, ISBN: 0-345-24223-8), [13] and it cost US$5.95. [14]
While not a form of registered mail, certified mail allows the sender proof of mailing via a mailing receipt and, upon request, electronic verification that an article was delivered or that a delivery attempt was made. [17] Some in-transit tracking and delivery confirmation information may be provided, but there is no formal chain of custody.
Payment card numbers are composed of 8 to 19 digits, [1] The leading six or eight digits are the issuer identification number (IIN) sometimes referred to as the bank identification number (BIN). [2]: 33 [3] The remaining numbers, except the last digit, are the individual account identification number. The last digit is the Luhn check digit.
It is possible to print multiple copies of an e-ticket itinerary receipt. Besides providing itinerary details, an e-ticket itinerary receipt also contains: An official ticket number (including the airline's 3-digit ticketing code, [2] a 4-digit form number, a 6-digit serial number, and sometimes a check digit)