Laissez-Faire is a novel design for backscatter communication that enables much higher data rates. The key idea is simple and elegant. The authors note that low-power backscatter systems, e.g., RFIDs, transmit their signal using ON-OFF keying –i.e., they convey bits by transitioning the signal between two levels, up and down. However, since their bit rate is low (tens of kbps), they have a smal...