The 5S Red Tag Register is an effective form used to log all items that have been identified and tagged in an areaâ (TM)s 5S Red Tagging event. This form logs each 5S red tagged item, the itemâ (TM)s classification, and the course of action to be taken so it can be tracked. Using the 5S Red Tag Register form provides a single point of control and reference for your tracking movement of equipment and materials during a workshop.