The state I was born and raised in offered good time to prisoners on a day to day basis. They would knock 1 day off of a sentence for each day you stayed out of trouble. The time knocked off is still similar to a probationary period, however not only are inmates on good behavior, but that will help taxpayers by not having to house them as long. The "time off for good behavior" is also taken away if the inmate gets out of line and if they violate the terms of thier release they do serve the rest of the sentence.
Idea No. 1288