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Linus Torvalds reckons AI is ‘90% marketing and 10% reality’
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
A lot of people use them for the use case I described (object detection for security cameras), using either Blue Iris or Frigate. They work pretty well for that use case.
Wake word detection is a good use case too (eg if you're making your own smart assistant).
The Coral site lists a few use cases.