Signatures on credit cards are an interesting artifact. Planet Money did a nice ...

CamatHN · on March 6, 2016

In the UK at least, receipts often are contracts and often have one or two terms on them. The singing is to prove you acknowledge the contract.

stevetrewick · on March 6, 2016

I'm in the UK, have worked frontline and back office retail and never seen this. Could you give an example?

CamatHN · on March 13, 2016

i.e. you go into a car park and upon buying the ticket they make you sign it because on the ticket they have written 'We are not responsible if your car or anything within it gets stolen or damaged.'

This term is onerous and as such needs to be agreed to which the signature does.