Introducing the Pathfinder Rebreather. The ultra lightweight travel-friendly closed circuit rebreather with ISCan Electronics. IScan™ is the next generation electronics developed by Innerspace System Corp to power the new Pathfinder rebreather. IScan is a Controller Area Network system based upon proven ISO standards used in the automotive aerospace and defense industries IScan is a digital network designed to allow independent devices to communicate and ISCan interact with each other. Handsets, HUDs and various sensors can operate independently and in concert to increase safety, redundancy and to reduce single points of failure.