# Stephen P. Hotelling — Patents explained on PatentBrief

Stephen P. Hotelling has 1 landmark patent explained in plain English on PatentBrief.

- [How Smartphones Use Light Sensors to Detect When You Are Talking](https://patentbrief.org/patent/us/8600430/imessage) — granted 2013
  Apple's patent on using light sensors to help a phone accurately detect when it is pressed against your ear, preventing accidental screen touches.

**Full profile:** https://patentbrief.org/inventor/stephen-p-hotelling

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._