The system has to be robust enough to recognize slightly different speeds and shapes while still catching fraudulent attempts, researchers say. A new system can look at a person’s finger making a motion in-the-air—like a signature or drawing a shape—to authenticate their identity. The framework, called FMCode, employs algorithms fed by a wearable sensor or camera, and can correctly identify users between 94.3 to 96.7 percent of the time on two different gesture devices after only seeing the passcode a few times, researchers say.Read Full Story