Medical RFID Detects Reflux in Esophagus

Research has shown new RFID device to identify simulated stomach acids and transmit results through human tissue. The RFID-enabled sensor detects stomach acid, gas and water. Testing will shift to animals before tests in humans. ...

... "The new system involves pinning a small, flexible RFID chip to the esophagus, where it remains until removed by a physician. The chip, about two square centimeters, or a little bigger than a dime, tests for electrical impulses that signal acidic or nonacidic liquids moving through the esophagus. It then transmits data to a wireless sensor worn around the neck. " ...

Via UT Southwestern Medical Center: Doctors, engineers develop new wireless system to detect esophageal reflux