When argyll does a calibration of the sensor for my ColorMunki, where is the calibration stored? On the device itself or somewhere on the system? I ask because I'm currently using -N for spotread if the user has already calibrated once since starting gnome-color-manager. Is this a safe thing to do? If it's stored on the device, I could fallback to requiring calibration once a week or so, rather than every single time you start the program, which is what I have now. Thanks, Richard.