Originally Posted by
katsup
I wouldn't give a seller the serial number. They could register it under their name, report it stolen and you'd be stuck proving it's yours or be forced to hand over the bike.
In person, I don't mind them checking.
I think you might have this backwards. I'd be more comfortable texting or emailing them the serial number because if they then report it stolen, I can show the police when I gave them the information. I might have a hard time proving they actually met with me.and got the serial number in person.