A method for wireless power transmission comprising: transmitting, by a transmitter (101a, 101b), power waves that converge in a three-dimensional space to form one or more first pockets of energy at a predetermined location for receiving by an antenna element of a receiver, wherein: the one or more first pockets of energy are regions of space where power accumulates based on the convergence of the power waves causing constructive interference at those regions, and the receiver is configured to harvest power from the power waves that converge to form the one or more first pockets of energy; receiving, from at least one sensor (113a, 113b) in communication with the transmitter, data generated based on one or more sensor waves distinct from the power waves, and indicating presence of a living being or a sensitive object, wherein the data indicating the presence of the living being or the sensitive object indicates a distance of the living being or the sensitive object from the at least one sensor; filtering, by the at least one sensor (113a, 113b) and the transmitter (101a, 101b), the data indicating the presence of the living being or the sensitive object to eliminate false indications of the presence of the living being or the sensitive object in the data; obtaining, by the transmitter, information relating to a location of the living being or the sensitive object based upon the data received from the at least one sensor indicating the presence of the living being or the sensitive object; and determining, by the transmitter, whether to adjust a power level and at least one other characteristic of the power waves that converge in the three-dimensional space to form the one or more first pockets of energy at the predetermined location in response to obtaining the information relating to the location of the living being or the sensitive object. the one or more first pockets of energy are regions of space where power accumulates based on the convergence of the power waves causing constructive interference at those regions, and the receiver is configured to harvest power from the power waves that converge to form the one or more first pockets of energy; receiving, from at least one sensor (113a, 113b) in communication with the transmitter, data generated based on one or more sensor waves distinct from the power waves, and indicating presence of a living being or a sensitive object, wherein the data indicating the presence of the living being or the sensitive object indicates a distance of the living being or the sensitive object from the at least one sensor; filtering, by the at least one sensor (113a, 113b) and the transmitter (101a, 101b), the data indicating the presence of the living being or the sensitive object to eliminate false indications of the presence of the living being or the sensitive object in the data; obtaining, by the transmitter, information relating to a location of the living being or the sensitive object based upon the data received from the at least one sensor indicating the presence of the living being or the sensitive object; and determining, by the transmitter, whether to adjust a power level and at least one other characteristic of the power waves that converge in the three-dimensional space to form the one or more first pockets of energy at the predetermined location in response to obtaining the information relating to the location of the living being or the sensitive object.