For the record, the six month sentence will mean in practice 90 days (after automatic 50% remission) less 18 days early release (because the prisons are full) making 72 days at most. Then there could be a Home Detention Curfew on a tag (Prisons full again) or the Governor can exercise discretion to let him out before the end of the sentence. It's such a short stretch that he may not be transferred to an open prison, where the locks are to keep intruders out rather then the prisoners in.