Cars have had DRM-like measures for longer than you might think. Go back to the 1990s, and coded cassette decks were a common way to stop thieves being able to use stolen stereos. Sadly, they became ...

The 9,000-, 12,000-, and 18,000-Btu single-zone line of compact cassettes and slim duct systems now fit a wider range of installations; they can be coupled with a single-zone heat pump or air ...

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