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Radio-frequency identification (RFID) technology is prominent in detecting and tracking objects using low-power wireless transmissions. By integrating sensing and identification functions into the RFID reader/interrogator, the system can be capable of monitoring vital parameters, such as temperature, blood pressure, heartbeat, glucose content, the information of individual patients, and so forth in real time. It is also critical for the younger generation besides the elderly to pay attention to vital signs monitoring for diseases, such as cardiac arrest, myocardial infarction, sleep apnea, and tachypnea. Conventional vital signs monitoring methods like sophisticated anesthesia machines, in which different systems are integrated to monitor a patient’s heart rate, blood pressure, oxygen saturation, and temperature, are intrusive in nature and cause inconvenience to the users since more dedicated sensors need to be worn. For …