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For example, the generator polynomial used for the Version 1 QR code (21×21), when 7 error correction bytes are used, is: g ( x ) = x 7 + α 87 x 6 + α 229 x 5 + α 146 x 4 + α 149 x 3 + α 238 x 2 + α 102 x + α 21 {\displaystyle g(x)=x^{7}+\alpha ^{87}x^{6}+\alpha ^{229}x^{5}+\alpha ^{146}x^{4}+\alpha ^{149}x^{3}+\alpha ^{238}x^{2}+\alpha ...
There is no QRpedia API, but you can use, say, the Google QR code API (other QR code APIs exist) to generate a code with the relevant qrwp.org short URL. for example: http://en.qrwp.org/Amsterdam. or: http://sv.qrwp.org/Vincent_van_Gogh. Note the use of underscores in the latter; and that you can use any two-letter language code ("en, "sv", etc ...
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...
Almost all two-dimensional bar codes such as PDF-417, MaxiCode, Datamatrix, QR Code, and Aztec Code use Reed–Solomon error correction to allow correct reading even if a portion of the bar code is damaged. When the bar code scanner cannot recognize a bar code symbol, it will treat it as an erasure.
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.
MeCard is a data file similar to vCard but used by NTT DoCoMo in Japan in QR code format for use with Cellular Phones. It is largely compatible with most QR-readers for smartphones. It is an easy way to share a contact with the most used fields.
QRpedia is a mobile Web -based system which uses QR codes to deliver Wikipedia articles to users, in their preferred language. [1] [2] [3] A typical use is on museum labels, linking to Wikipedia articles about the exhibited object.
Most modern smartphones are able to decode barcode using their built-in camera. Google's mobile Android operating system can use their own Google Lens application to scan QR codes, or third-party apps like Barcode Scanner to read both one-dimensional barcodes and QR codes.
The Aztec Code is a matrix code invented by Andrew Longacre, Jr. and Robert Hussey in 1995. [1] The code was published by AIM, Inc. in 1997. Although the Aztec Code was patented, that patent was officially made public domain. [2] The Aztec Code is also published as ISO/IEC 24778:2008 standard.
A vector inversion generator ( VIG) is an electric pulse compression and voltage multiplication device, allowing shaping a slower, lower voltage pulse to a narrower, higher-voltage one. VIGs are used in military technology, e.g. some directed-energy weapons, as a secondary stage of another pulsed power source, commonly an explosive-driven ...
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