1. A multi-application-transceiver device, comprising: a middleware component configured to receive a rule set, over a network, from a remote computing device storing a plurality of rule sets, each rule set corresponding to a different monitoring application, the received rule set defining application specific settings for a monitoring application to be enabled on the multi-application-transceiver device; at least one signal transceiver configured to receive a reflected signal in response to an original signal sent by the at least one signal transceiver, the reflected signal being reflected from at least one target object; a signal conversion unit configured to convert the reflected signal into digital format; a digital signal processor component including an alterable rule engine configured to store the received rule set and implement the monitoring application by loading the application specific settings of the received rule set, the digital signal processor component configured to signal process the converted reflected signal using the received rule set to discriminate a change in a state of the at least one target object against an earlier state of the at least one target object in a context of the monitoring application; and an interface configured to communicate results of the signal processing to a user or the remote computing device according to the received rule set.