Hi,
the fact that it is digital makes no difference at all apart from the fact that it is easier to do,( it is called mileage correction,)
Tony is quite right in what he says about leaving it if you are not completely satisfied about it,
Look for the tell tale signs, like pedal rubbers worn,
smooth patches on steering wheel where the grainy texture has worn away, etc,
Just remember, if it looks too good to be true, then it probably is.
There are plenty of cars around, it's a buyers market at the moment.
good luck.