i see some of online payment systrem got this certificate ,and i want to know,it that mean they can be trust ?which kind of online payment got this certificate?
Well you know, you just enter "PCI DSS meaning" to google, and you get the answer instantly. But as it seems, you were too lazy for that, so I did it for you:
The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to optimize the security of credit, debit and cash card transactions and protect cardholders against misuse of their personal information.
Next time please use google first!