Abstract: Cellulose ester films may include taggants to provide for product authentication and counterfeit identification, especially in packaging applications. In some instances, a tagged cellulose ester film may include cellulose ester, a plasticizer, and a taggant, wherein the taggant comprises at least one taggant component selected from the group consisting of an elemental marker, a molecular fluorophore, a particulate fluorophore, and any combination thereof.

Abstract: Porous masses that include taggants may provide for product authentication and counterfeit identification, especially products like smoking device filters and smoking devices. In some instances, a tagged porous mass may include a plurality of binder particles; a taggant that comprises at least one taggant component selected from the group consisting of an elemental marker, a molecular fluorophore, a particulate fluorophore, and any combination thereof; a plurality of second particles, wherein the second particles comprise at least one selected from the group consisting of active particles, organic particles, and any combination thereof; and wherein the binder particles are bound to the second particles at sintered contact points.