I helped my friend get a loan, but I didn't sign it. I just took a picture. Does it affect me?
It doesn't matter. Taking a photo will not be borrowed evidence. The loan shall be executed according to the signed loan contract. If you don't sign it, you are not responsible. A loan contract is also a kind of contract. Without my signature, I didn't authorize others to sign it. The loan contract is invalid for me, and I don't need to undertake contractual obligations.