CAC Setup Guides
Pick your operating system. Each guide is a focused walkthrough — usually 10-20 minutes start to finish.
Set up CAC on Windows 10 / 11
Get your CAC reader recognized and your DoD certificates installed on Windows in about 15 minutes.
~15 min · 5 steps
Set up CAC on macOS
macOS has built-in smart card support since 10.12. With the right cert bundle and Safari, you can be on .mil sites in 10 minutes.
~10 min · 5 steps
Set up CAC on Linux
Linux CAC support is excellent if you know what to install. Works on Ubuntu, Fedora, Arch, and most distros.
~20 min · 5 steps
Use CAC on iPhone / iPad
Yes, you can authenticate to .mil sites and sign email from your iPhone or iPad with a Lightning or USB-C CAC reader.
~15 min · 4 steps
Use CAC on Android
Android CAC support is more limited than iOS, but works with the right reader and the right app.
~20 min · 4 steps
Use CAC on Chromebook (ChromeOS)
ChromeOS supports CAC via the Smart Card Connector extension. Works well on most Chromebooks.
~15 min · 4 steps