Recently, the Galileo programme is continuing to develop, over passing obstacles at financial, managerial and technical level. In 2014, early service provision should be achieved thanks to the first set of satellites that will constitute the first stage of the Galileo constellation. For this objective the European Commission (from here and after EC) is working hard together with the GSA and external consultants to monitor the respect of the awarded contracts for the satellite manufacturing, launch and operation services provision. In parallel, for the exploitation of the system, strategies and policies have to be set to stimulate innovation and allow market growth. This is particularly true for the exploitation of the E6 band of the Galileo system infrastructure that is designated for the “so called” Commercial Services (from here and after CS). Recent studies, proposed to the EC Galileo Unit team for CS exploitation, underline some categories for CS, such as: high precision, authentication, data broadcast, etc… Under this area of interest, much more have to be analyzed and researched in regard of short-term and long-term consequences of today’s decisions. In this respect, the objective of this document is to demonstrate that the Galileo authentication service has the potential to become a key element allowing GNSS to be really complementary to terrestrial wireless technology for future mobile services.