A beacon and/or sensor device comprising - an advanced function module ; a primary power source consisting of a battery cell configured to provide operating power to components of the beacon and/or sensor device , excluding the advanced function module of the beacon and/or sensor device , to allow the beacon and/or sensor device to have limited functionality; a secondary power source having a capacitor configured to provide power to the advanced function module to carry out an additional function of the beacon and/or sensor device without using or draining power from the battery cell; a power management unit configured to measure power levels of the battery cell and the capacitor, wherein the power management unit is configured to determine that the capacitor requires charging based on a measured power level of the capacitor and provide an indication that a signal should be sent to a wireless power charging transmitter to begin charging; and a controller configured to receive the indication that the signal should be sent to a wireless power charging transmitter to begin charging and an indication of a need for power for the advanced function module ; an antenna configured to transmit a first data signal based on the indication that the signal should be sent to the wireless power charging transmitter to begin charging and the indication of a need for power for the advanced function module to the wireless power charging transmitter ; and at least one induction coil coupled to the capacitor and configured to receive power transmission signals from the wireless power charging transmitter to charge the capacitor to provide power for the additional function of the beacon and/or sensor device . - an advanced function module ; a primary power source consisting of a battery cell configured to provide operating power to components of the beacon and/or sensor device , excluding the advanced function module of the beacon and/or sensor device , to allow the beacon and/or sensor device to have limited functionality; a secondary power source having a capacitor configured to provide power to the advanced function module to carry out an additional function of the beacon and/or sensor device without using or draining power from the battery cell; a power management unit configured to measure power levels of the battery cell and the capacitor, wherein the power management unit is configured to determine that the capacitor requires charging based on a measured power level of the capacitor and provide an indication that a signal should be sent to a wireless power charging transmitter to begin charging; and a controller configured to receive the indication that the signal should be sent to a wireless power charging transmitter to begin charging and an indication of a need for power for the advanced function module ; an antenna configured to transmit a first data signal based on the indication that the signal should be sent to the wireless power charging transmitter to begin charging and the indication of a need for power for the advanced function module to the wireless power charging transmitter ; and at least one induction coil coupled to the capacitor and configured to receive power transmission signals from the wireless power charging transmitter to charge the capacitor to provide power for the additional function of the beacon and/or sensor device . <EOS>