Civil UAVs Need GPS Anti-Spoofing, But Who Pays?

Civil UAVs Need GPS Anti-Spoofing, But Who Pays?:
The leader of a university research team that showed how easy it is to hijack a UAV by spoofing its GPS won the rapt attention of a congressional hearing this morning (July 19).
Todd Humphreys, an assistant professor with the University of Texas at Austin, is recommending that, for operation in national airspace, all civil UAVs above 18 lb. be required to have spoof-resistant navigation. And he goes beyond that, recommending that GPS-based timing and positioning systems used in national critical infrastructure be required to be spoof-resistant.