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2. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   The code is used in the pharmaceutical industry and has an advantage that it can be applied to products and materials in a wide variety of ways, including printed labels, ink-jet printing, laser-etching, indenting or hole punching.

3. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

4. Security printing - Wikipedia

   en.wikipedia.org/wiki/Security_printing

   Security printing. Security printing is the field of the printing industry that deals with the printing of items such as banknotes, cheques, passports, tamper-evident labels, security tapes, product authentication, stock certificates, postage stamps and identity cards. The main goal of security printing is to prevent forgery, tampering, or ...

5. Dot matrix printing - Wikipedia

   en.wikipedia.org/wiki/Dot_matrix_printing

   Because the printing involves mechanical pressure, dot matrix printers can create carbon copies and carbonless copies. [29] Epson LQ 850. Although nearly all inkjet, thermal, and laser printers also print closely spaced dots rather than continuous lines or characters, it is not customary to call them dot matrix printers. [27]

6. Price look-up code - Wikipedia

   en.wikipedia.org/wiki/Price_look-up_code

   Price look-up codes, commonly called PLU codes, PLU numbers, PLUs, produce codes, or produce labels, are a system of numbers that uniquely identify bulk produce sold in grocery stores and supermarkets. The codes have been in use since 1990, and over 1400 have been assigned. [ 1] The codes are administered by the International Federation for ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!