Up until now the costs for a certificate infrastructure was up to the certificate. This meant: A user paid in order to get a certificate.
A user however does not have an advantage if he uses a certificate. The advantage is on the side of the person who wants to do business or the mail receiver who would like a digitally signed email as prove. Because of this the mentioned accounting method is not very effective when it comes to reach the critical mass of people which are needed for the commercial success of a public key infrastructure.

A new accounting method can be implemented by using online-validation. The issuing of a certificate is without charge, the validation however does cost a small amount. In this case the trader who would like an approved digitally signed order will pay for the costs of an infrastructure.

SyTrust CertControl validation server supports this accounting method with a flexible interface to billing and accounting systems.