A computing device, comprising: a memory; a communication interface, adapted for communication with an intra network, wherein the intra network is an internal network; said computing device being arranged to produce log information related to its operation, and a controller configured to: store, in the memory, one or more logs that meet a predetermined condition (112, 113), said condition comprising the detection of a predetermined character string set in said one or more logs; store, in the memory, a device ID of a mobile router, in response to the communication interface receiving the device ID (S11, S43) from a local device that is connected to the computing device through said intra network; control the communication interface to transmit a request for an intra network connection with the mobile router, in response to the computing device being within a wireless communication range of the mobile router as a result of the mobile router being moved and a device ID (S2, S3) being received from the mobile router matching the device ID received from the local device; establish the intra network connection (S2, S3) with the mobile router, upon authentication of the computing device by the mobile router; and control the communication interface to transmit said one or more logs (S14, S51) stored in the memory through the established intra network to the mobile router. a memory; a communication interface, adapted for communication with an intra network, wherein the intra network is an internal network; said computing device being arranged to produce log information related to its operation, and a controller configured to: store, in the memory, one or more logs that meet a predetermined condition (112, 113), said condition comprising the detection of a predetermined character string set in said one or more logs; store, in the memory, a device ID of a mobile router, in response to the communication interface receiving the device ID (S11, S43) from a local device that is connected to the computing device through said intra network; control the communication interface to transmit a request for an intra network connection with the mobile router, in response to the computing device being within a wireless communication range of the mobile router as a result of the mobile router being moved and a device ID (S2, S3) being received from the mobile router matching the device ID received from the local device; establish the intra network connection (S2, S3) with the mobile router, upon authentication of the computing device by the mobile router; and control the communication interface to transmit said one or more logs (S14, S51) stored in the memory through the established intra network to the mobile router. store, in the memory, one or more logs that meet a predetermined condition (112, 113), said condition comprising the detection of a predetermined character string set in said one or more logs; store, in the memory, a device ID of a mobile router, in response to the communication interface receiving the device ID (S11, S43) from a local device that is connected to the computing device through said intra network; control the communication interface to transmit a request for an intra network connection with the mobile router, in response to the computing device being within a wireless communication range of the mobile router as a result of the mobile router being moved and a device ID (S2, S3) being received from the mobile router matching the device ID received from the local device; establish the intra network connection (S2, S3) with the mobile router, upon authentication of the computing device by the mobile router; and control the communication interface to transmit said one or more logs (S14, S51) stored in the memory through the established intra network to the mobile router.