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Apple interested in putting Touch ID sensor directly into touch screen displays

February 10, 2015

touch-id-confirmation

One of the largest ongoing critiques against the iPhone has been the fairly large bezels above and below the display. Among the details in the patent titled “Fingerprint Sensor in an Electronic Device,” published last week by the US Patent and Trademark Office, are how a touchscreen-based Touch ID would be designed to scan a single fingerprint at a specific location on the display. So when it would come to unlock their device, or use a Touch ID-based feature, for example buying a song on iTunes, users would place their thumb or finger on that part of the screen for authentication.

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Apple’s proposed invention also mentions the ability to have a fingerprint be scanned from any single location on the screen, or even scan multiple fingers at once. Imagine when it comes time to use a Touch ID feature on an iPhone and simply placing a thumb anywhere on the screen that is comfortable. Or, in the case of an iPad, having all five fingerprints scanned by placing one’s hand on the screen.

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It seems the primary concern with embedding fingerprint sensors into touchscreen displays is that doing so comes at a cost to image quality, or a reduction in sensitivity to touch inputs. Apple’s solution suggests making the fingerprint sensor an integrated circuit connected either to the top or bottom surface of the display. As for the reduction in touch sensitivity, Apple thinks a full-panel fingerprint sensor could also be used for detecting touch inputs, in other words having the technology both detecting touch and scanning fingerprints.


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