Where: The PLB is regarded as personal and may be used on land, on ships, in aircrafts, etc., However, taking such equipment on board a vehicle, is subject to the approval of the master of the vehicle.  And the PLB is of course programmed with the person's identity and not the identity of the vehicle
Other NPT is the authority that licenses PLB including assigning ID (ID is serial number issued by administration)
NPT has the PLB register and the RCC has 24 hours-a-day access to this register