article_snippet: But in the near future these scanners will not only work when your fingerprints are obscured, your fingerprints will work behind layers of glass and metal.
article_snippet: ‘active area’ - the software captures an image of the fingerprint instantly.
article_snippet: And because This uses waves that bounce off the surface of a finger This can be used behind materials such as glass or metal.
article_snippet: And this is the reason why it works even if the user has dirty hands, has recently applied hand lotion and other similar scenarios.
highlights_snippet: Sensor uses ultrasonic sound waves to capture the print's ridges .
  
highlights_snippet: This also captures sweat pores and more on the tip of a finger .
  
highlights_snippet: Because This uses waves, can be used behind glass or  even metal .
  