QR barcode image back to text

Question

I converted hello world to a barcode QR code, but my question is to return the text.

I mean, if I sent this image to my friend, then is there a way my friend will return his text without using a barcode reader / reader for mobile devices ... etc. is there also any php function ?!

If not, then is there any idea, I can convert the text to an encoded image, and then with a php function! can i return it to text ?!

Answer 1

There are several web decoders with a web interface. Your friend can simply upload the image and the service will tell her that the code says.

One of the most popular is ZXing - http://zxing.org/w/decode.jspx

There are others in

http://www.onlinebarcodereader.com/

http://www.patrick-wied.at/static/qrgen/

Answer 2

I use a ZBar barcode reader on linux (there is also a Windows and iPhone binary), which can scan them using any supported video in the device or in several file formats (for example, directly from PDF). This is also useful if you want a script to process a QR code.

eg.

 $ zbarimg http://i.stack.imgur.com/pQV0s.png QR-Code:hello world 

Answer 3

To convert text to a qrcode image, you can use this online tool: http://textmechanic.co/QR-Code-Generator.html

Answer 4

Try the following sites:

http://online-barcode-reader.inliteresearch.com/default.aspx - accept image, download PDF

http://www.datasymbol.com/barcode-recognition-sdk/barcode-reader/online-barcode-decoder.html - accept image, txt, xml upload