A system comprising: a multi-modal sensing surface ; and an object configured to extend sensing capabilities of the multi-modal sensing surface away from the surface , the object comprising a first antenna coil and a second antenna coil , wherein the first and second antenna coils are electrically connected together and wherein at least one of the first and second antenna coils comprises a plurality of radial elements , wherein the at least one antenna coil has a circular shape and the radial elements extend inside and outside of the circle formed by the antenna coil ; and the multi-modal sensing surface comprising: two overlaid arrays , the two arrays comprising a capacitive sensing electrode array and an array of RF antennas ; a first sensing module coupled to the capacitive sensing electrode array and arranged to detect both an increase and a decrease of capacitance between electrodes in the array ; and a second sensing module coupled to the array of RF antennas and arranged to selectively tune and detune one or more of the RF antennas in the array of RF antennas ; wherein one of the first and second antenna coils in the object is arranged to couple with an RF antenna in the multi-modal sensing surface and wherein the other antenna coil is spatially separated from the multi-modal sensing surface and provides an extended touch area. a multi-modal sensing surface ; and an object configured to extend sensing capabilities of the multi-modal sensing surface away from the surface , the object comprising a first antenna coil and a second antenna coil , wherein the first and second antenna coils are electrically connected together and wherein at least one of the first and second antenna coils comprises a plurality of radial elements , wherein the at least one antenna coil has a circular shape and the radial elements extend inside and outside of the circle formed by the antenna coil ; and the multi-modal sensing surface comprising: two overlaid arrays , the two arrays comprising a capacitive sensing electrode array and an array of RF antennas ; a first sensing module coupled to the capacitive sensing electrode array and arranged to detect both an increase and a decrease of capacitance between electrodes in the array ; and a second sensing module coupled to the array of RF antennas and arranged to selectively tune and detune one or more of the RF antennas in the array of RF antennas ; wherein one of the first and second antenna coils in the object is arranged to couple with an RF antenna in the multi-modal sensing surface and wherein the other antenna coil is spatially separated from the multi-modal sensing surface and provides an extended touch area. two overlaid arrays , the two arrays comprising a capacitive sensing electrode array and an array of RF antennas ; a first sensing module coupled to the capacitive sensing electrode array and arranged to detect both an increase and a decrease of capacitance between electrodes in the array ; and a second sensing module coupled to the array of RF antennas and arranged to selectively tune and detune one or more of the RF antennas in the array of RF antennas ; wherein one of the first and second antenna coils in the object is arranged to couple with an RF antenna in the multi-modal sensing surface and wherein the other antenna coil is spatially separated from the multi-modal sensing surface and provides an extended touch area. <EOS>