QR code security

Question

I have been reading a lot about QR codes and how the code itself can lead to serious security risks. But one thing that I did not come across is the following.

In th

Answer 1

QR code is not more than encode a text into 2D image. So it is not QR code's responsibility to encrypt. But you can always generate a simple verification code, e.g. MD5 or Base64 that created from an unique id plus the date. Depends on what kind protection you want, you can either reject or disable the code comes with wrong verification code.