# Dave Hamilton — Patents explained on PatentBrief

Dave Hamilton has 1 landmark patent explained in plain English on PatentBrief.

- [How External Hardware Keys Secure Digital Purchases and Downloads](https://patentbrief.org/patent/us/7404202/netflix-dvd-by-mail-queue) — granted 2008
  A system using a physical hardware device to prove your identity to a server, allowing you to securely download and decrypt digital assets.

**Full profile:** https://patentbrief.org/inventor/dave-hamilton

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