“…In addition, only a limited number of the reported solutions support battery-less operation [ 55 , 56 ] and are not optimized for low-cost applications [ 54 , 55 , 56 , 57 , 58 ]. The DC power consumption of battery-less NFC sensors reported in the literature is generally higher than 1.5 mW [ 28 , 29 , 30 , 34 , 41 , 42 , 43 , 47 , 53 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. In [ 24 , 38 ], an NFC sensor power consumption of less than 1 mW has been reported, however the authors did not report the precise value of the power consumption.…”