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  2. Social Security number - Wikipedia

    en.wikipedia.org/wiki/Social_Security_number

    The Social Security number is a nine-digit number in the format "AAA-GG-SSSS". [35] The number has three parts: the first three digits, called the area number because they were formerly assigned by geographical region; the middle two digits, the group number ; and the last four digits, the serial number .

  3. Taxpayer Identification Number - Wikipedia

    en.wikipedia.org/wiki/Taxpayer_Identification_Number

    Internal Revenue Code section 6109(d) provides: "The social security account number issued to an individual for purposes of section 205(c)(2)(A) of the Social Security Act [codified as 42 U.S.C. § 405(c)(2)(A)] shall, except as shall otherwise be specified under regulations of the Secretary [of the Treasury or his delegate], be used as the ...

  4. National identification number - Wikipedia

    en.wikipedia.org/wiki/National_identification_number

    The code is shown in all forms of valid identification: national ID card; electronic national ID card (with a chip) driver's license (old A6-sized and new credit card-sized) passport; During 1964–1970 the personal identity code was known as sosiaaliturvatunnus (SOTU, Social Security number). The term is still widely in use unofficially (and ...

  5. Identity documents in the United States - Wikipedia

    en.wikipedia.org/wiki/Identity_documents_in_the...

    In the absence of a national identity card (and concordant national identity number), the Social Security number has become the de facto national identifier for a large variety of purposes, both governmental and non-governmental. The SSN was created to ensure accurate reporting of a worker's wages to the Social Security Administration. Prior to ...

  6. Numident - Wikipedia

    en.wikipedia.org/wiki/Numident

    Numident, or "Numerical Identification System," [1] is the Social Security Administration's computer database file of an abstract of the information contained in an application for a United States Social Security number (Form SS-5). It contains the name of the applicant, place and date of birth, and other information.

  7. Verification and validation - Wikipedia

    en.wikipedia.org/wiki/Verification_and_validation

    Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results.

  8. Feeling so tired all the time? Iron deficiency might be the ...

    www.aol.com/lifestyle/feeling-tired-time-iron...

    From iron tablets to IVs, here's what experts need you to know about replenishing low iron levels.

  9. Employer Identification Number - Wikipedia

    en.wikipedia.org/wiki/Employer_Identification_Number

    The provision was first enacted as part of the revision of the Tax Code in 1954. This authority was broadened in 1961 by 26 USC 6109. An EIN is usually written in form 00-0000000 whereas a Social Security Number is usually written in the form 000-00-0000 in order to differentiate between the two. There are EIN Decoders on the web that can ...