@Angelo
1.) CASA - the official service center of the car brand (Toyota CASA, Nissan CASA, Mitsubishi CASA, etc).
2.) That's what i thought as well, but it turned out that it's easier to tamper digital odo compared to analog. Possible ways are:
a.) change of cluster gauge; or
b.) connecting a certain device to the car and it will do the rest (https://www.youtube.com/watch?v=2iVz5vEeqDw).