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  2. Use Face, Fingerprint or PIN to sign in to AOL - AOL Help

    help.aol.com/articles/use-face-fingerprint-or...

    The option to enable biometrics as a sign-in method may not yet be available for you. If you see the option to enable it when you sign in, follow the prompts to complete the process.

  3. Category:Line codes - Wikipedia

    en.wikipedia.org/wiki/Category:Line_codes

    Pages in category "Line codes" The following 46 pages are in this category, out of 46 total. This list may not reflect recent changes. * Line code; 0–9. 2B1Q; 4B3T;

  4. One-time password - Wikipedia

    en.wikipedia.org/wiki/One-time_password

    MasterCard SecureCode uses OTAC to confirm a user's identity One time authorization code as used in Yammer's desktop client. A one-time password (OTP), also known as a one-time PIN, one-time passcode, 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.

  5. Personal unblocking key - Wikipedia

    en.wikipedia.org/wiki/Personal_unblocking_key

    If the wrong PIN is entered more than three times, the SIM card will become locked. It can be unlocked by entering the PUK code provided by the mobile service provider, [1] which may be available on the SIM card's packaging, the contract, or provided by customer service after identity verification. After the PUK code is entered, the PIN must be ...

  6. Line code - Wikipedia

    en.wikipedia.org/wiki/Line_code

    the line-coded signal can be printed on paper to create a bar code. the line-coded signal can be converted to magnetized spots on a hard drive or tape drive. the line-coded signal can be converted to pits on an optical disc. Some of the more common binary line codes include:

  7. Vertical service code - Wikipedia

    en.wikipedia.org/wiki/Vertical_service_code

    A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence.

  8. Modified AMI code - Wikipedia

    en.wikipedia.org/wiki/Modified_AMI_code

    The AMI code guarantees that transitions are always present before and after each mark (1 bit), but are missing between adjacent spaces (0 bits). To prevent loss of synchronization when a long string of zeros is present in the payload , deliberate bipolar violations are inserted into the line code, to create a sufficient number of transitions ...

  9. C0 and C1 control codes - Wikipedia

    en.wikipedia.org/wiki/C0_and_C1_control_codes

    In 1973, ECMA-35 and ISO 2022 [18] attempted to define a method so an 8-bit "extended ASCII" code could be converted to a corresponding 7-bit code, and vice versa. [19] In a 7-bit environment, the Shift Out would change the meaning of the 96 bytes 0x20 through 0x7F [a] [21] (i.e. all but the C0 control codes), to be the characters that an 8-bit environment would print if it used the same code ...