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2. High Capacity Color Barcode - Wikipedia

   en.wikipedia.org/wiki/High_Capacity_Color_Barcode

   High Capacity Color Barcode. High Capacity Color Barcode ( HCCB) is a technology developed by Microsoft for encoding data in a 2D "barcode" using clusters of colored triangles instead of the square pixels conventionally associated with 2D barcodes or QR codes. [1] Data density is increased by using a palette of 4 or 8 colors for the triangles ...

3. Venmo rolls out QR codes for user profiles in its mobile app

   techcrunch.com/2017/08/07/venmo-rolls-out-qr...

   The use of QR codes in social apps has grown more popular in recent years in the U.S. – especially after Snapchat’s 2015 launch of its cooler take on the aging barcode format with “Snapcodes ...

4. EPC QR code - Wikipedia

   en.wikipedia.org/wiki/EPC_QR_code

   EPC QR code. The European Payments Council Quick Response Code guidelines define the content of a QR code that can be used to initiate SEPA credit transfer (SCT). It contains all the necessary information in clear text. These QR code guidelines are used on many invoices and payment requests in the countries that support it (Austria, Belgium ...

5. Quadratic residue code - Wikipedia

   en.wikipedia.org/wiki/Quadratic_residue_code

   Its generator polynomial as a cyclic code is given by. where is the set of quadratic residues of in the set and is a primitive th root of unity in some finite extension field of . The condition that is a quadratic residue of ensures that the coefficients of lie in . The dimension of the code is . Replacing by another primitive -th root of unity ...

6. Snapchat now lets you make QR Snapcodes that open websites

   techcrunch.com/2017/01/31/website-snapcodes

   Snapchat introduced the QR codes for profiles in January 2015, based on technology it acquired along with startup Scan.me. They made it easy for people to add each other on Snapchat without typing ...

7. WhatsApp Business, now with 50M MAUs, adds QR codes and ...

   techcrunch.com/2020/07/09/whatsapp-business-now...

   The WhatsApp Business app — used by merchants to interface with customers over WhatsApp and use the platform to market themselves — now has 50 million monthly active users, according to ...