QR Codes mit der Google Chart API
Die Google Chart API kann nun auch QR-Codes erstellen.
This is how you can creating these with the Google Chart API:
Simply, there is a new chart type, qr, with attributes to tell the service what to produce:
cht=qr
chl=<text>
choe=<output>
<text> is text for the QR code. This must be url-encoded in UTF8. Note the space between hello and world is written as %20 in the following example.
<output> optionally specifies how the text is encoded into bytes in the QR Code. If this is not specified the default of UTF-8 is used. Available options are: Shift_JIS, UTF-8, or ISO-8859-1.
via Google Code Blog