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I am looking for help to implement a QR Code generator on my site. The site is built in Ruby on Rails. I have tried to use rqrcode but could not seem to get it to work. I would like to use the google chart API.
OVERVIEW:
A simple QR code generator. In the view, a user can pass in a string, the string is then stored, and then sent to the QR code generator script, at this point the resulting QR Code image should be displayed back to the user.
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If your QR Codes are not working, it's most likely due to design elements. Some reader apps and phone cameras have difficulty scanning complex QR Codes. Below are a few important design elements to take into account. Make sure there is a significant contrast between the QR Code's foreground and background.
If you want to reactivate a specific QR Code, you need to upgrade the account the QR Code was created in. To upgrade, log in to your account and go to Account - Features & Pricing. It's not possible to reactivate a QR Code by creating and upgrading a new account.
No, QR codes do not have an expiration date. The QR code has a Quick Link behind it. As long as the Quick Link is active, the QR code will continue to work.
A QR Code campaign might be disabled for a number of reasons like – failed conversion rates, a decrease in engagement, or even wrongful usage. In such cases, your phone won't read the QR Code. A reliable QR Code generator, however, alerts the user of the message when the QR Code campaign has been disabled.
Just released a gem that makes this very easy if you're using rails 3.
Follow the installation documentation at: https://github.com/samvincent/rqrcode-rails3
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See: http://code.google.com/apis/chart/infographics/docs/qr_codes.html.
QR codes are a popular type of two-dimensional barcode. They are also known as hardlinks or physical world hyperlinks. QR Codes store up to 4,296 alphanumeric characters of arbitrary text. This text can be anything, for example URL, contact information, a telephone number, even a poem! QR codes can be read by an optical device with the appropriate software. Such devices range from dedicated QR code readers to mobile phones...
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