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  2. 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 ...

  3. List of GS1 country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_GS1_country_codes

    UPC-A compatible - Used to issue restricted circulation numbers within a company 050–059: UPC-A compatible - GS1 US reserved for future use 060–099: UPC-A compatible - United States: 100–139 United States: 200–299: Used to issue GS1 restricted circulation number within a geographic region [1] 300–379 France and Monaco: 380 Bulgaria ...

  4. Porting Authorisation Code - Wikipedia

    en.wikipedia.org/wiki/Porting_Authorisation_Code

    A PAC is valid for a period of 30 calendar days from the day of issue, and the customer's request must be submitted to their new service provider within that time. A number can then be transferred between 1 and 32 calendar days from the date the PAC is issued. Some mobile phone companies can charge a fee to move the customer's number.

  5. Identify legitimate AOL websites, requests, and communications

    help.aol.com/articles/identify-legitimate-aol...

    • Fake email addresses - Malicious actors sometimes send from email addresses made to look like an official email address but in fact is missing a letter(s), misspelled, replaces a letter with a lookalike number (e.g. “O” and “0”), or originates from free email services that would not be used for official communications.

  6. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    This was accomplished by adding the digit "9" to the beginning of any phone number that started with a "9" (government and semi-government connections), and adding the digit "3" to any phone numbers that did not start with the number "9". [1] It is common to write phone numbers as (0xx) yyyyyyy, where xx is the area code.

  7. International Article Number - Wikipedia

    en.wikipedia.org/wiki/International_Article_Number

    The most commonly used EAN standard is the thirteen-digit EAN-13, a superset of the original 12-digit Universal Product Code (UPC-A) standard developed in 1970 by George J. Laurer. [1] An EAN-13 number includes a 3-digit GS1 prefix (indicating country of registration or special type of product). A prefix with a first digit of "0" indicates a 12 ...

  8. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    Users can switch carriers while keeping number and prefix (so prefixes are not tightly coupled to a specific carrier). If there is only 32.. followed by any other, shorter number, like 32 51 724859, this is the number of a normal phone, not a mobile. 46x: Join (discontinued mobile phone service provider) [3] 47x: Proximus (or other) 48x

  9. Electronic Product Code - Wikipedia

    en.wikipedia.org/wiki/Electronic_Product_Code

    An EPC RFID tag used by Wal-Mart. The Electronic Product Code (EPC) is designed as a universal identifier (using an idiosyncratic numerical code for each different commodity [1]) that provides a unique identity for every physical object anywhere in the world, for all time.