Graphene quantum dots (GQD), offers new application opportunities due to its bandgap tunability through quantum confinement and edge effects, stable photoluminescence, chemical stability and low toxicity. Owing to their excellent optical, thermal and electrical properties, GQDs have generated enormous excitement in different applications such as bio-imaging, optical sensors and photovoltaic devices. In this talk, unique properties and applications of GQDs will be presented together with Quantag’s approach of using GQDs for product authentication applications.