SIM Card Number

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Full Title or Meme

Yet one more identifier that is traced to a unique individual user (in nearly all cases.)

Context

  • This is a smart card chip on a very thin backing that is inserted into a smart card.
  • It contains a 19 (or so) digit decimal number, sometimes appended with an alphabetic suffix.

Problems

This is tied to the user by the telco. But is no more secure than the phone number since sim card swapping replaces it in the telco db.

Solutions

Do not use this number for high assurance authentication.

References