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  2. Postal codes in Singapore - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Singapore

    Using the 6-digit postal code to look up the Central Public Lirbary in the OneMap application. Due to Singapore being a small city-state and most buildings having singular, dedicated delivery point, the postal code can be used as a succinct and precise identifier of buildings in Singapore, akin to a geocode.

  3. CEPAS - Wikipedia

    en.wikipedia.org/wiki/CEPAS

    CEPAS, the Specification for Contactless e-Purse Application, is a Singaporean specification for an electronic money smart card.The specification was prepared by the Cards and Personnel Identification Technical Committee (CPITC), under the purview of the IT Standard Committee of Singapore (ITSCS).

  4. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    The final digit of a Universal Product Code, International Article Number, Global Location Number or Global Trade Item Number is a check digit computed as follows: [3] [4]. Add the digits in the odd-numbered positions from the left (first, third, fifth, etc.—not including the check digit) together and multiply by three.

  5. What's a six-digit verification code — and why you should ...

    www.aol.com/whats-six-digit-verification-code...

    Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure. For example, you might get a text message or email with a six ...

  6. Record locator - Wikipedia

    en.wikipedia.org/wiki/Record_locator

    In airline reservation systems, a record locator is an alphanumeric code used to identify and access a specific record on an airline’s reservation system. An airline’s reservation system automatically generates a unique record locator whenever a customer makes a reservation or booking, commonly known in the industry as an itinerary.

  7. Electronic ticket - Wikipedia

    en.wikipedia.org/wiki/Electronic_ticket

    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) Carriage terms and conditions (or at least a reference to them) Fare and tax details, including fare calculation details and some additional data such as tour codes.

  8. Postal address verification - Wikipedia

    en.wikipedia.org/wiki/Postal_address_verification

    If an apartment number is not specified, the default address (lobby) is used for delivery. If the address is valid, it is assigned a ZIP+4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range. An address with a ZIP+4 code (or nine-digit ZIP code) is considered to ...

  9. S10 (UPU standard) - Wikipedia

    en.wikipedia.org/wiki/S10_(UPU_standard)

    The identifiers consist of a two-letter service indicator code, an eight-digit serial number (in the range 00000000 to 99999999), a single check-digit, and a two-letter ISO country code identifying the issuing postal administration's country.