The sensor is attached to the patient's clothes to detect the body orientation. When there is no turning of the patient over time, the system will alert the caretakers preventing the bedridden patients from suffering from bed sore / pressure ulcer because of forgetting to change the body posture. The control panel can be installed outside each ward or at the nurse station to remind the caretakers to complete the body turn within the pre-set time. The customized user interface for elderly homes makes it easier to oversee the status of all the patients, including their body orientations and the time of the last patient turn.