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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_code

   QR codes have been used to establish "virtual stores", where a gallery of product information and QR codes is presented to the customer, e.g. on a train station wall. The customers scan the QR codes, and the products are delivered to their homes. This use started in South Korea, and Argentina, but is currently expanding globally.

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

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

   6. Scan the QR code using your authenticator app. 7. Click Continue. 8. Enter the code shown in your authenticator app. 9. Click Done. Sign in with 2-step for authenticator app. 1. Sign in to your AOL account with your password. 2. Enter the verification code shown in your authenticator app. 3. Click Verify.

4. Scan (company) - Wikipedia

   en.wikipedia.org/wiki/Scan_(company)

   Scan's products consist of mobile applications that consumers use for reading a variety of physical codes such as QR codes, NFC, and machine-recognizable images (Computer Vision). Scan's website allows for the creation of QR codes as well as targeted codes that link to web destinations such as social network profiles, websites, and Scan-hosted ...

5. QR code payment - Wikipedia

   en.wikipedia.org/wiki/QR_code_payment

   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 ...

6. 2-Step Verification with a Security Key - AOL Help

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

   Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. A security key is a physical device that gets uniquely associated with your AOL account after you enable it. Discover how to enable, sign in with, and manage your security key.

7. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   Barcode. A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called ...