# How Phones Sense Your Finger Hovering Without Touching the Screen > This patent describes a system for electronic devices, like phones, to detect a finger hovering just above the screen, display a specific interactive element below it, and then let you control that element with gestures without ever making contact. - **Patent:** US 7653883 - **Original title:** Proximity detector in handheld device - **Owner:** Apple Inc - **Granted:** 2010 - **Status:** Public domain (expired) - **Times cited:** 860 - **Field:** consumer_electronics, software, telecommunications ## What it does This patent describes an "I/O platform" (like a phone's screen and sensors) that can detect when a finger is very close to, but not actually touching, its surface (Claim 1). It figures out the finger's position above the screen. Based on what app is running, the system then picks a specific "graphical user interface element" (like a button or a scroll bar) to show on the screen, directly underneath where the finger is hovering. Importantly, the system chooses this element based on the app's context, not the exact spot (x,y coordinates) where the finger first appeared (Claim 1). Once the element appears, the system can then detect gestures, like a circular motion, performed by the finger hovering above that displayed element. For example, if you hover your finger, a "virtual scroll wheel" might appear, and you could rotate your finger above it to scroll (Claim 5). This detection can happen using light, electrical capacitance, or sound waves (Claim 7). ## What it does NOT cover - It does not cover interactions where your finger directly touches the screen to provide input. - It does not cover selecting a graphical element based on the precise X and Y coordinates of your finger's initial hover position over the application. - It does not cover proximity detection systems that do not also determine the position of the hovering object. - It does not cover gestures performed before a specific graphical user interface element is displayed below the hovering finger. ## The clever bit The truly clever part is detecting a non-contacting finger, then dynamically deciding *which* interactive element to show based on the active application, displaying that element *under* the hovering finger, and then allowing a gesture to control it, all without physical touch. This allows for contextual interaction before a user even makes contact. ## Real-world examples 1. Original iPhone proximity sensor turning off the screen during calls 2. Many modern smartphone lock screens that react to a hand waving over them (though often for simple wake-up, not complex gestures) 3. Some smart displays or smart speakers that detect a hand approaching to reveal controls ## Why it matters This patent was filed by Apple in 2005, before the original iPhone was released. It describes fundamental technology for how early smartphones could sense objects without direct touch, which was crucial for features like turning off the screen when you hold the phone to your ear during a call. It also laid groundwork for more advanced hover interactions, exploring how users could interact with a device's interface in a new way. ## Frequently asked questions ### What does How Phones Sense Your Finger Hovering Without Touching the Screen cover? This patent describes a system for electronic devices, like phones, to detect a finger hovering just above the screen, display a specific interactive element below it, and then let you control that element with gestures without ever making contact. ### Who owns patent US 7653883? Apple Inc owns this patent, granted in 2010. ### When does this patent expire? This patent is expected to expire on January 26, 2030, when the invention enters the public domain. ### What is patent US 7653883 cited by? This patent has been cited by 860 later patents that build on its ideas. ### What problem does this patent solve? This patent was filed by Apple in 2005, before the original iPhone was released. It describes fundamental technology for how early smartphones could sense objects without direct touch, which was crucial for features like turning off the screen when you hold the phone to your ear during a call. It also laid groundwork for more advanced hover interactions, exploring how users could interact with a device's interface in a new way. ### What does this patent NOT cover? It does not cover interactions where your finger directly touches the screen to provide input. **Full plain-English explainer:** https://patentbrief.org/patent/us/7653883/multi-touch-trackpad-gestures **Original patent:** https://patents.google.com/patent/US7653883 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._