I have been informed that any POS system that is processing credit cards and is using the Win XP OS on BOH computers AND FOH POS computers will be in violation of PCI DSS compliance rules as of April 2014. This effects a huge # of POS systems and my clients are not hearing anything from the credit card processors regarding this issue (or the POS companies as well). I'm wondering just how end-users are going to respond to the fact that their POS system(s) will be Non-PCI compliant in 7 months. Is this something our clients should be concerned about? Are POS end-users really going to replace all their POS stations? Can end-users downgrade their XP OS to POS Ready 2009 as that OS expires in 2019 or beyond?