QR Codes are far and away the most popular 2D barcodes for mobile applications these days. However, there are several other widely-used 2D barcode symbologies as well, including Aztec (used in the IATA standard for mobile airline boarding passes) and Data Matrix and PDF417.
Is there any research on which 2D barcode symbologies can be read most reliably by an ordinary smartphone image sensor?
- Which symbologies are most tolerant of low contrast, noisy background, lack of "quiet zone", etc?
- Are there significant differences in reliability when reading a paper barcode vs. a barcode displayed on another device's screen (LCD- or AMOLED-based)?
- Basically, if I'm trying to develop an application which will allow users to share information between devices via 2D barcodes… which one will make the process least "fiddly" for users?
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