The investigators propose a non-blinded trial with n=10 where all subjects will undergo the two devices. A video camera will be placed in each subject room for recording the repositioning events to correlate the monitor signals with the actual subject repositioning captured by the video. The goal of the trial is to validate the ability of each of the sensor prototypes to accurately detect when subjects are turned, in order to reduce stationary positioning which contributes to the incidence of pressure ulcers and to improve compliance with patient repositioning trials. The repositioning events recorded by the sensor devices will be automatically uploaded and abstracted by the research team, along with the events captured by the simultaneous video recording of patient repositioning.