{"id":215437,"date":"2016-05-01T00:00:00","date_gmt":"2016-05-01T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/pre-touch-sensing-for-mobile-interaction-2\/"},"modified":"2020-04-16T11:49:34","modified_gmt":"2020-04-16T18:49:34","slug":"pre-touch-sensing-for-mobile-interaction","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/pre-touch-sensing-for-mobile-interaction\/","title":{"rendered":"Pre-Touch Sensing for Mobile Interaction"},"content":{"rendered":"<p>Touchscreens continue to advance\u2014including progress towards sensing fingers proximal to the display. We explore this emerging <em>pre-touch modality<\/em> via a self-capacitance touchscreen that can sense multiple fingers above a mobile device, as well as grip around the screen\u2019s edges. This capability opens up many possibilities for mobile interaction. For example, using pre-touch in an <em>anticipatory<\/em> role affords an \u201cad-lib interface\u201d that fades in a different UI\u2014appropriate to the context\u2014as the user approaches one-handed with a thumb, two-handed with an index finger, or even with a pinch or two thumbs. Or we can interpret pre-touch in a <em>retroactive<\/em> manner that leverages the approach trajectory to discern whether the user made contact with a ballistic vs. a finely-targeted motion. Pretouch also enables <em>hybrid touch + hover gestures<\/em>, such as selecting an icon with the thumb while bringing a second finger into range to invoke a context menu at a convenient location. Collectively these techniques illustrate how pre-touch sensing offers an intriguing new back-channel for mobile interaction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Touchscreens continue to advance\u2014including progress towards sensing fingers proximal to the display. We explore this emerging pre-touch modality via a self-capacitance touchscreen that can sense multiple fingers above a mobile device, as well as grip around the screen\u2019s edges. This capability opens up many possibilities for mobile interaction. For example, using pre-touch in an anticipatory 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