A wireless automation network, WAN, source device, wherein the WAN source device is configured to generate a WAN data packet containing a payload with automation data according to a WAN communication protocol and an application packet, and to transmit the WAN data packet to a WAN destination device; wherein the WAN source device comprises: a wireless localization engine; a destination location generator; a source location authorizer; and an application packet wrapper; wherein the source location authorizer is configured to provide an information whether the destination location generator and the wireless localization engine are authorized for accessing location information; if said authorization for accessing the location information is permitted then: said wireless localization engine is configured to generate a source location stamp; said destination location generator is configured to receive the source location stamp and generate a destination location stamp based on the received source location stamp; the destination location generator and the wireless localization engine are configured to add a corresponding valid flag of the source and destination location stamps for indicating whether the source and destination stamps are valid due to the authorization for accessing the location information; the application packet wrapper is configured to encode the source location stamp, the destination location stamp and the valid flag in an application packet, and is further configured to output the application packet. a wireless localization engine; a destination location generator; a source location authorizer; and an application packet wrapper; wherein the source location authorizer is configured to provide an information whether the destination location generator and the wireless localization engine are authorized for accessing location information; if said authorization for accessing the location information is permitted then: said wireless localization engine is configured to generate a source location stamp; said destination location generator is configured to receive the source location stamp and generate a destination location stamp based on the received source location stamp; the destination location generator and the wireless localization engine are configured to add a corresponding valid flag of the source and destination location stamps for indicating whether the source and destination stamps are valid due to the authorization for accessing the location information; the application packet wrapper is configured to encode the source location stamp, the destination location stamp and the valid flag in an application packet, and is further configured to output the application packet. said wireless localization engine is configured to generate a source location stamp; said destination location generator is configured to receive the source location stamp and generate a destination location stamp based on the received source location stamp; the destination location generator and the wireless localization engine are configured to add a corresponding valid flag of the source and destination location stamps for indicating whether the source and destination stamps are valid due to the authorization for accessing the location information; the application packet wrapper is configured to encode the source location stamp, the destination location stamp and the valid flag in an application packet, and is further configured to output the application packet.