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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

3. Google URL Shortener - Wikipedia

   en.wikipedia.org/wiki/Google_URL_Shortener

   Existing links will stop working on August 25, 2025. (2025-08-25) . Google URL Shortener, also known as goo.gl, is a URL shortening service owned by Google. It was launched in December 2009, initially used for Google Toolbar and Feedburner. [2] The company launched a separate website, goo.gl, in September 2010. [3][4][5]

4. Google Authenticator - Wikipedia

   en.wikipedia.org/wiki/Google_Authenticator

   Proprietary freeware (some versions were under Apache License 2.0) Google Authenticator is a software-based authenticator by Google. It implements multi-factor authentication services using the time-based one-time password (TOTP; specified in RFC 6238) and HMAC-based one-time password (HOTP; specified in RFC 4226), for authenticating users of ...

5. URL shortening - Wikipedia

   en.wikipedia.org/wiki/URL_shortening

   The goo.gl service provides analytics details and a QR code generator. [citation needed] On 30 March 2018 Google announced that it is "turning down support for goo.gl over the coming weeks and replacing it with Firebase Dynamic Links" (although existing goo.gl links will continue to function). [22]

6. Add or disable 2-step verification for extra security - AOL Help

   help.aol.com/articles/2-step-verification...

   1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Add or disable 2-step verification for extra security. Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and ...

7. QR code payment - Wikipedia

   en.wikipedia.org/wiki/QR_code_payment

   A QR code payment is a mobile payment method where payment is performed by scanning a QR code from a mobile app. [1] This is an alternative to doing electronic funds transfer at point of sale using a payment terminal. [2] This avoids a lot of the infrastructure traditionally associated with electronic payments such as payment cards, payment ...