How to Get Cac Card Reader to Work Individuals who have a valid authorized need to admission DoD Public Key Infrastructure (PKI)- protected information but practice not take access to a regime site or government-furnished equipment will need to configure their systems to access PKI-protected content. Accessing DoD PKI-protected information is virtually commonly achieved using the PKI certificates stored on your Mutual Access Card (CAC). The certificates on your CAC can allow you to perform routine activities such as accessing OWA, signing documents, and viewing other PKI-protected information online. For more data most your CAC and the data stored on information technology, visit http://www.cac.mil . Earlier you begin, make sure you know your system's policies regarding remote use.