Topic: Invisible QR codes. - page 2. (Read 7244 times)
You could probably make some fun bitcoin games out of the idea. People hunting for bitcoins scanning everything in sight looking for a hidden qr code.
This was the top google hit for 'java image steganography':
http://www.dreamincode.net/forums/topic/27950-steganography/
It gives example code where text is hidden directly in the image data.
Normally people hide the data in the low bits of the image data though I have not looked through that code's algorithm.
QR code recognition would be much more robust in noisy environments mind because of their error correction codes and position markers.
http://www.dreamincode.net/forums/topic/27950-steganography/
It gives example code where text is hidden directly in the image data.
Normally people hide the data in the low bits of the image data though I have not looked through that code's algorithm.
QR code recognition would be much more robust in noisy environments mind because of their error correction codes and position markers.
Wow, I love how the basic info of bits and bytes is explained here^^^ regardless of crypt/stegan stuff.
This was the top google hit for 'java image steganography':
http://www.dreamincode.net/forums/topic/27950-steganography/
It gives example code where text is hidden directly in the image data.
Normally people hide the data in the low bits of the image data though I have not looked through that code's algorithm.
QR code recognition would be much more robust in noisy environments mind because of their error correction codes and position markers.
http://www.dreamincode.net/forums/topic/27950-steganography/
It gives example code where text is hidden directly in the image data.
Normally people hide the data in the low bits of the image data though I have not looked through that code's algorithm.
QR code recognition would be much more robust in noisy environments mind because of their error correction codes and position markers.
Did I get this right? This "invisible QR code" is just image recognition? So at the app vendor's website there is a database of all "active" images. If I find one of these, the app translates it into a link.
Why would I want that? It has nothing to do with QR-codes as it only works as long as the database is not polluted by millions of similar pictures that confuse the app thus it will *only* work as proprietary software.
Why would I want that? It has nothing to do with QR-codes as it only works as long as the database is not polluted by millions of similar pictures that confuse the app thus it will *only* work as proprietary software.
Wow, this looks really cool.
It's be even better if someone hosted an open-source service like this so the community at large could use this.
It's be even better if someone hosted an open-source service like this so the community at large could use this.
QR codes are like sticking your hand into holes in the ground. Invisible QR codes are like a poorly covered-up hole in the ground with a sign next to it that says "Stick hand in hole to read about why you need to give me your money!"
Exactly! That's what makes this a beautiful APP. Before, during and after watching the video, my head was spinning on how this could be used in conjunction with Bitcoin.
QR codes are like sticking your hand into holes in the ground. Invisible QR codes are like a poorly covered-up hole in the ground with a sign next to it that says "Stick hand in hole to read about why you need to give me your money!"
Somehow stumbled upon this, not sure what use it would be to bitcoins but it looks fun.
http://www.digimarc.com/discover/barcodes.asp?_kk=qr%20code&_kt=3efe5237-0e66-4328-9a7f-276e1822e7ad&gclid=CIyA-bivuqsCFQFS7AodIn9Ecg
http://www.digimarc.com/discover/barcodes.asp?_kk=qr%20code&_kt=3efe5237-0e66-4328-9a7f-276e1822e7ad&gclid=CIyA-bivuqsCFQFS7AodIn9Ecg
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