Courts around the nations began employing 24/7 programs to cut jail costs and improve compliance with conditions of release.   In 2013, Washington piloted the 24/7 program and in 2015 expanded its use in Ch. 36.28A RCW.   However, a Montana court ruled the 24/7 program was an unconstitutional search and seizure under the 4th Amendment.   The Montana Supreme Court reviewed that decision, concluding that while it is a search--the search is reasonable in light of the reduced privacy expectations of the defendant and the well established concerns with impaired driving.  

A copy of the full opinion is available here: