Manufacturers haven't built this carrier phase technique into their cheap GPS chips because they're not sure what the general public would do with geolocation so accurate that you could pinpoint the wrinkles in the palm of your hand.
Fabrikkerne har ikke bygget  denne polarisationsteknik ind i deres billige GPS chips fordi de ikke er sikre på hvad  den almindelige bruger vil gøre med geolokation så akkurat at du kan udpege linjerne i din håndflade.