The Sentinel SCM Stacker Bag Cash Management System offers retailers with two deposit bags, each holding 2,000 notes. When notes are validated, they are staged in the vault with the note accumulator, and when 500 notes are compiled, they are dropped as a bundle into the deposit bag. The bags are heat-sealed before retailers can open the door to get the bundles. Cash cannot be touched by anyone until it reaches the counting center. It uses Windows-based software and provides two-way communication between Sentinel, POS and back office reporting systems.