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When the skewed scan straddles rows 6 and 7, then the scanner sees noise. When the scan is on row 7, the scanner sees symbols in cluster 0. Consequently, the scanner knows the direction of the skew. By the time the scanner reaches the right, it is on row 10, so it sees cluster 0 patterns. The scanner will also see a constant stop pattern.
ZBar is an open-source C barcode reading library with C++, Python, [2] Perl, and Ruby bindings. [3] [4] [5] It is also implemented on Linux and Microsoft Windows as a command-line application, [6] and as an iPhone application.
The QR code at the bottom allows the validity of the ticket to be digitally verified. The "most popular" ticket machine, Ticketer Large, is designed for busy urban routes. It is a fixed point solution, with an ITSO-compliant smart card reader, printer and an electronic point of sale machine. [10]
The format for the bank code and bank account number is country-specific. The technology allows MICR readers to scan and read the information directly into a data-collection device. Unlike barcode and similar technologies, MICR characters can be read easily by humans.
The first mark sense scanner was the IBM 805 Test Scoring Machine; this read marks by sensing the electrical conductivity of graphite pencil lead using pairs of wire brushes that scanned the page. In the 1930s, Richard Warren at IBM experimented with optical mark sense systems for test scoring, as documented in US Patents 2,150,256 (filed in ...
SnapTags can be used in Google's mobile Android operating system [7] and iOS devices (iPhone/iPod/iPad) [8] using The SnapTag Reader App or third party apps that have integrated the SnapTag Reader SDK. SnapTags can also be used by standard camera phones by taking a picture of the SnapTag and texting it to the designated short code or email address.