![]() Steve Jobs demonstrates the accelerometer and gyroscope sensors (Fast forward to 17:45) Curious apps might be able to learn a lot about users through the accelerometer and without their knowledge or permission. Currently, iOS allows any installed app to access accelerometer data without explicit permission from the user. There also have been some research to develop novel accelerometer applications: estimating heart rate, breathing rate, or even as a rudimentary audio recorder using just the accelerometer. It’s also found many other uses, whether as a game controller in racing games, as a pedometer for counting daily steps, or to detect falls as seen in the Apple Watch. ![]() It’s most commonly used for detecting the device’s orientation. Nearly every modern smartphone is equipped with an accelerometer, which as the name implies, is a sensor that measures acceleration.
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