Based on work as part of the Children’s Hospital of Atlanta (CHoA) pediatric seed grants competition, a team of researchers put together this report in 2013 on the design of a battery-free moisture sensor for diapers and bed-wetting. The final design showed that diversity antennas feeding two RFID chips and a common moisture sensor could be placed on a low-cost, flexible inset and interrogated accurately in a room with a UHF RFID reader. Download the report here.