1. A method for monitoring sensors using an RFID system having a plurality of read zones, comprising: obtaining a state of a plurality of sensors using an RFID system, wherein the state of each sensor comprises sensor information, a time stamp, and a spatial location that is a representation of a single unique position in space in which the sensor is located, which is specified independently of the read zones of the RFID system, wherein obtaining the state comprises: determining, using the RFID system, the spatial location of a sensor independent of the read zones of the RFID system based on a set of properties of signals received from the sensor when the sensor is illuminated, wherein the set of properties comprises at least one of a phase and a direction of arrival of the signals; and storing the state of the plurality of sensors within a database, wherein the stored state of at least one sensor comprises a first spatial location within a particular read zone with a first time stamp and a different, second spatial location within the particular read zone with a different, second time stamp; determining whether the stored state of the plurality of sensors satisfies at least one spatial condition based on the first and second spatial locations of the at least one sensor within the particular read zone; and triggering at least one event based upon determining that the stored state satisfies the at least one spatial condition.