Smartphone light sensors pose privacy risks and could let hackers capture images, gestures
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Researchers show ambient light sensors in phones can be exploited to capture images, posing a privacy threat.
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The sensors could also intercept gestures and interactions, like swiping or video watching.
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The study underscores the need to tighten ambient light sensor permissions to reduce precision and sampling rate.
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Going forward, users should be granted control over ambient light sensors like with camera permissions.
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The findings highlight the broader context of smartphone security vulnerabilities, like spyware, that users should be aware of.