cardtool readerstatus \\.\READERNAME This is the power-user feature. You can send raw APDUs (hex bytes) to a card. For example, to select the Master File on many Java Cards:
If you’ve ever worked with smart cards, digital signatures, or hardware-based certificates on Windows, you’ve likely heard of certutil.exe . But lurking in the shadows of C:\Windows\System32 is a lesser-known but equally powerful utility: cardtool.exe . cardtool exe
For years, this command-line tool has been quietly managing the low-level operations of smart cards. Today, we’re pulling back the curtain on cardtool.exe —what it is, why it exists, and how to use it. cardtool.exe is a native Windows command-line utility designed specifically for interacting with and managing smart card readers and inserted cards . Unlike the broader certutil , which handles certificates across the entire system, cardtool focuses on the physical (or virtual) card interface. cardtool readerstatus \\
cardtool listreaders Output example:
Do you use cardtool.exe in your workflow? Have a favorite APDU command? Share it in the comments below! But lurking in the shadows of C:\Windows\System32 is