I am looking for solutions for user verification. Try to prevent scammers on the site. I would like to try and verify that people are who they say they are. I know there can be Paypal verification and also use Authorize.net to try and verify. I am not saying this is a 100% full proof way of stopping people, but I would like to show the people by a badge who took the opportunity to get verified.
Is there a service our there that has an api that I can send users to to become verified and pass the results back. I dont' want to store personal information. I would appreciate some possible solutions and services. Does not have to be a free service.