The document discusses experiments conducted to test the feasibility of using high sensitivity GPS (HSGPS) for indoor location-based services at Schiphol Airport in the Netherlands. HSGPS was able to acquire satellite signals with weaker power levels than conventional GPS. Experiments showed HSGPS could determine positions indoors in certain areas with windows, like a shopping corridor, and outdoors along airport roadways with fewer satellites. The conclusion is that HSGPS shows potential for some indoor location services at the airport.