Power & Login

Scramble Keypad (optional)

This feature helps protect from cameras and other observers by randomizing the numbers for entering the PIN on the display.


  1. Go to Settings

  2. Select Scramble Keypad

  3. Press OK

Your keypad will now be scrambled!

Disable USB (optional)

This is to operate your device in a complete airgapped manner in case you do not have a power-only USB cable, since the data communication from the Coldcard will be deactivated as soon as this function is enabled.


  1. Go to Settings

  2. Select Disable USB

Idle Timeout (optional)

Once activated, this feature will turn off the Coldcard after a predefined amount of time has elapsed.

You can set it to different values between two minutes and eight hours, or disable the idle auto-logout function completely.


  1. Go to Settings

  2. Select Idle Timeout

  3. Select time

    • Default timeout period is 4 hours

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