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The codes should be well lit. Shadow makes it more difficult to scan. Avoid reflected glare (particularly when laminating the codes or placing them behind glass). Larger codes will scan more effectively. 2 inches (5 cm) across will allow for distance and older smartphones with lower quality cameras. 1 inch (2.5 cm) should be the minimum.
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The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [6] [7] [8] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [9] the pattern of the position detection markers was determined by finding the least-used sequence of ...
Get shortened URL; Download QR code; Print/export Download as PDF; Printable version ... // and mailto: will create a link and an icon but require an agent registered ...
URL redirection, also called URL forwarding, ... Many web servers will generate a 3xx status code if a script outputs a "Location:" header line.
URLs that are shortened with the bitly service use the bit.ly domain or any other generic domain that the service offers. [9] Starting October 12, 2010, users could automatically generate QR codes that, when scanned with a mobile QR code reader, automatically directed users to shortened links. [10]
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For each URL entered, the server adds a new alias in its hashed database and returns a short URL. According to the website, the shortened URLs will never expire. TinyURL offers an API which allows applications to automatically create short URLs. [2] Short URL aliases are seen as useful because they are easier to write down, remember or distribute.