GPS data are increasingly being used by businesses and governments to support key operations (e.g. verification of mileage and time for workers, confirmation of duration and location of car use for pay-as-you-drive insurance and taxes). However, these uses of GPS data have a key weakness: GPS data are falsifiable through tampering and cannot be independently verified.
Location Data Signing utilizes asymmetric cryptography to digitally sign data related to a GPS fix. This technology is able to prove that a particular GPS fix occurred on a particular phone with a specific user logged into the application, at a specific time, in a similar way to how an internet user can verify the identity of online banking websites. Location Data Signing can easily show that a GPS fix is unaltered from the data originally calculated by a specific GPS-enabled mobile phone application.
Experimentation to date has demonstrated that this feature is possible given the computing power of current commercially-available mobile phones.