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  2. Fix problems signing into your AOL account - AOL Help

    help.aol.com/articles/help-signing-in

    To manage and recover your account if you forget your password or username, make sure you have access to the recovery phone number or alternate email address you've added to your AOL account. If you know your username but need to reset your password, make sure you create a strong password after you're back in your account.

  3. Electronic signature - Wikipedia

    en.wikipedia.org/wiki/Electronic_signature

    An electronic signature, or e-signature, is data that is logically associated with other data and which is used by the signatory to sign the associated data. [1] [2] [3] This type of signature has the same legal standing as a handwritten signature as long as it adheres to the requirements of the specific regulation under which it was created (e.g., eIDAS in the European Union, NIST-DSS in the ...

  4. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    It allowed users to replace traditional customer verification methods such as signature verification and test questions with a secure PIN system. [15] In recognition of his work on the PIN system of information security management , Atalla has been referred to as the "Father of the PIN".

  5. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    Alice signs a message—"Hello Bob!"—by appending a signature computed from the message and her private key. Bob receives both the message and signature. He uses Alice's public key to verify the authenticity of the signed message. A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A ...

  6. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    There are several types of security codes and PVV (all generated from DES key in the bank in HSM modules using PAN, expiration date and service code): . The first code, 3 numbers, called CVC1 or CVV1, is encoded on track one and two of the magnetic stripe of the card and used for card present transactions, with signature (second track also contains pin verification value, PVV, but now it is ...

  7. ATM - Wikipedia

    en.wikipedia.org/wiki/ATM

    Its PIN verification process was similar to the later IBM 3624. [56] Atalla's HSM products protect 250 million card transactions every day as of 2013, [52] and secure the majority of the world's ATM transactions as of 2014. [49] The IBM 2984 was a modern ATM and came into use at Lloyds Bank, High Street, Brentwood, Essex, the UK in December 1972.

  8. Multi-factor authentication - Wikipedia

    en.wikipedia.org/wiki/Multi-factor_authentication

    [2] [failed verification] Modern smartphones are used both for receiving email and SMS. So if the phone is lost or stolen and is not protected by a password or biometric, all accounts for which the email is the key can be hacked as the phone can receive the second factor. Mobile carriers may charge the user messaging fees.

  9. BLS digital signature - Wikipedia

    en.wikipedia.org/wiki/BLS_digital_signature

    A BLS digital signature, also known as Boneh–Lynn–Shacham [1] (BLS), is a cryptographic signature scheme which allows a user to verify that a signer is authentic.. The scheme uses a bilinear pairing:, where ,, and are elliptic curve groups of prime order , and a hash function from the message space into .