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  2. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    Personal identification number. A personal identification number ( PIN ), or sometimes redundantly a PIN number or PIN code, is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system. The PIN has been the key to facilitating the private data exchange between different data-processing centers ...

  3. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode ...

  4. One-time password - Wikipedia

    en.wikipedia.org/wiki/One-time_password

    One-time password. A one-time password ( OTP ), also known as a one-time PIN, one-time authorization code ( OTAC) or dynamic password, is a password that is valid for only one login session or transaction, on a computer system or other digital device. OTPs avoid several shortcomings that are associated with traditional (static) password-based ...

  5. List of postal codes - Wikipedia

    en.wikipedia.org/wiki/List_of_postal_codes

    The postal code refers to the post office at which the receiver's P. O. Box is located. Kiribati: KI – no codes - Korea, North: KP – no codes - Korea, South: 2015-08-01 KR: NNNNN Previously NNN-NNN (1988~2015), NNN or NNN-NN (1970~1988) Kosovo: XK: NNNNN A separate postal code for Kosovo was introduced by the UNMIK postal administration in ...

  6. Postal codes in Ghana - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Ghana

    Postal codes were adopted in Ghana on 18 October 2017, following the launch of the National Digital Address System. [1] [2] As a joint venture between Ghana Post (with support from the Government of Ghana]) and Vokacom Ltd as GhanaPost GPS , the Digital Address System assigned postal codes and unique addresses to every square in Ghana.

  7. ZIP Code - Wikipedia

    en.wikipedia.org/wiki/ZIP_code

    A ZIP Code (an acronym for Zone Improvement Plan) is a system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels more efficiently and quickly (zipping along) when senders use the code in the postal address. Introduced on July 1, 1963, the basic format comprised five digits.

  8. ISO 3166-2 - Wikipedia

    en.wikipedia.org/wiki/ISO_3166-2

    The purpose of ISO 3166-2 is to establish an international standard of short and unique alphanumeric codes to represent the relevant administrative divisions and dependent territories of all countries in a more convenient and less ambiguous form than their full names. Each complete ISO 3166-2 code consists of two parts, separated by a hyphen: [1]

  9. Postal Index Number - Wikipedia

    en.wikipedia.org/wiki/Postal_Index_Number

    A Postal Index Number ( PIN; sometimes redundantly a PIN code) [note 1] refers to a six-digit code in the Indian postal code system used by India Post. On 15 August 2022, the PIN system celebrated its 50th anniversary.