A computer-implemented method of configuring a sensing system for monitoring a place, the system comprising a plurality of network devices located in the place and including at least one network device configured as a transmitter to transmit wireless signals over one or more wireless channel and at least one network device ( 202c configured as a receiver to receive wireless signals transmitted in the place and subject to disturbance by the place, the method comprising: transmitting wireless signals from the transmitter; detecting disturbed wireless signals at the receiver; determining from the disturbed wireless signals a characteristic of a first physical configuration of the network devices, wherein the characteristic of the first physical configuration is a signal characteristic of a first received signal; providing to a user, via a user interface of a client device associated with the user, feedback (804,812) based on the characteristic of the first physical configuration; detecting that a second physical configuration has been implemented in response to the feedback; and determining a characteristic of a second physical configuration wherein the characteristic of the second physical configuration is a signal characteristic of a second received signal, wherein the first and second received signals are received by the receiver, wherein the signal characteristic comprises channel state information and characterized in that the method further comprises determining if the characteristic of the first physical configuration meets a configuration criterion, wherein the feedback is provided based on whether the characteristic of the first physical configuration meets the configuration criterion, wherein the configuration criterion defines that the channel state information of the received signal matches channel state information of a characteristic signal representative of the place, wherein the feedback provided to the user comprises a request for the user to confirm movement of an entity in a path of the first received signal and, upon receiving a confirmation of the movement from the user via the user interface, at least one of an indication of a quality of the first signal and a reconfiguration instruction. transmitting wireless signals from the transmitter; detecting disturbed wireless signals at the receiver; determining from the disturbed wireless signals a characteristic of a first physical configuration of the network devices, wherein the characteristic of the first physical configuration is a signal characteristic of a first received signal; providing to a user, via a user interface of a client device associated with the user, feedback (804,812) based on the characteristic of the first physical configuration; detecting that a second physical configuration has been implemented in response to the feedback; and determining a characteristic of a second physical configuration wherein the characteristic of the second physical configuration is a signal characteristic of a second received signal, wherein the first and second received signals are received by the receiver, wherein the signal characteristic comprises channel state information and characterized in that the method further comprises determining if the characteristic of the first physical configuration meets a configuration criterion, wherein the feedback is provided based on whether the characteristic of the first physical configuration meets the configuration criterion, wherein the configuration criterion defines that the channel state information of the received signal matches channel state information of a characteristic signal representative of the place, wherein the feedback provided to the user comprises a request for the user to confirm movement of an entity in a path of the first received signal and, upon receiving a confirmation of the movement from the user via the user interface, at least one of an indication of a quality of the first signal and a reconfiguration instruction.