Abstract: Aspects of the invention provide a process for detecting sources of wireless data packets exhibiting defined behaviour of interest in a wireless network environment, the process comprising the steps of: monitoring the wireless network environment to receive wireless data packets; populating one or more queues of wireless data packets from the received wireless data packets, wherein wireless data packets received are added to the one or more queues dependent on a detection template to detect one or more devices which are sources of one or more of the received wireless data packets, wherein a detection template comprises code defining one or more algorithms applied to the received packets to define the behaviour of interest, extracting device identifier data from the wireless data packets in the queue to identify one or more detected source devices exhibiting said defined behaviour; generating display data carrying information on a signal strength of wireless data packets from the same of the one or more identi

Abstract: A device for detecting and locating sources of wireless data packets exhibiting selected, defined behaviour of interest. The device monitors an environment and populates a queue of packets dependent on a selected detection template which carries algorithms to packets to detect the behaviour of interest. The device extracts identifier data from packets in the queue to identify sources of detected behaviour. Information on signal strength of wireless data packets received by an antenna from identified, detected sources is displayed at a user interface. The interface is responsive to selections of template, selection of source devices detected and adjustments to the orientation and/or proximity of an antenna relative to selected, detected source devices to provide an interface for detection and location of source devices exhibiting selected behaviour of interest.