TRUSTCONCEPT TAX STAMPS is a web-based authentication, information and communication system that connects the real world to the virtual. TRUSTCONCEPT TAX STAMPS designates visual authentication elements that are linked to a comprehensive database. Depending on authorities’ needs, the database contains product information for end users, data of product movements of excisable goods, and product validation data for customs. The data linked to the optical signs can be read by smartphones with a cust