Years ago I generated this QR code from a website using a black and white image of myself wearing shades.
Now I want to assign my Facebook page or other URL to it, so I can print it on business cards and other stuff, including a T-shirt. Do you know how can I do that? TIA.
The QR code is unique to the original URL you used to create it.
You will have to generate a unique code for each URL you want to use.