The TGR project represents the development of a highly innovative security platform and target application exploiting current and future GNSS as well as augmentations systems such as EGNOS. In order to leverage the power of GNSS for access control and position attestation applications, it is necessary to develop a GNSS receiver technology able to provide an acceptable level of intractability towards known and future attacks. Development of such technology not only provides a platform for the target mass-market application, an access control token, but also ensures development of European intellectual property that can be leveraged for a myriad of security applications and future research, presenting significant market opportunity