With FEMA implimenting this whole National Incident Management System (NIMS), as opposed to millions of different Incident Command Systems (ICS), this is a good topic. I think it would be interesting to find out how many different types of Triage Systems are in place across the US and Canada. More specifically, how many spearate systems are used in single states. The objective of NIMS, is to make ICS compatible so that all branches of Emergency Services can work united. That is Police, Fire, EMS, EOC, and the Military. Perhaps it would be a good idea to make every state, and all entities in it use the same Triage Tag system?
As to not monopolize any one company, a certain type could be made that are available from all suppliers.
We use a system in the county that works with a bar code system. Prior to that it was the Mettag Kits. In PBH, we still had cases of the DOD-OCD cards because METTAG was too expensive to mass stock.