If you wanted to do something nefarious, using a medium that has your contact details printed on it seems unwise.
We all have a line. You may not plug things into your USB ports, some people don't even connect to the internet.
Either way, if I have a secret I'm sure as hell not going to write it down, let alone put evidence of it on a computer. Defraud my bank if you want, that's between you and them and honestly they can afford it.
If you wanted to do something nefarious, using a medium that has your contact details printed on it seems unwise.
Then put someone else's contact details on it "Hey man, I just found this 'linux business card' with Linus Torvald's contact information on it -- plug it in and try it!"
I'd notice it isn't Linus handing me his business card. The author is handing this to people in person. I wouldn't use it if he was wearing a ski mask. If you are already there, showing your face, commiting crimes, just use a gun to get whatever you want and skip the cloak and dagger stuff.
We all have a line. You may not plug things into your USB ports, some people don't even connect to the internet.
Either way, if I have a secret I'm sure as hell not going to write it down, let alone put evidence of it on a computer. Defraud my bank if you want, that's between you and them and honestly they can afford it.