US Patent 10356577 Method and system for asset tracking

Described herein is a method for asset transportation verification. The method comprises detecting a trigger for asset transportation verification; tracking one or more first asset location updates of a first asset tracking device; tracking one or more second asset location updates of a second asset tracking device; determining, responsive to the trigger, whether the second asset tracking device is co-located with the first asset tracking device based upon the one or more first asset location updates and the one or more second asset location updates; generating an alert in response to determining the first asset tracking device is not co-located with the second asset tracking device.