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Revealed: car industry was warned keyless vehicles vulnerable to theft a decade ago
(www.theguardian.com)
This is a most excellent place for technology news and articles.
I mean... to break into a keyless car you need special radio interception and replay equipment, the know how to implement them, to keep up on the latest security measures from car manufacturers, and car thief communities developing security counter measures.
Or get a coat hanger, watch a YouTube video, and get into any car you want.
Still not much more effort than a flipper zero but it is more expensive than a coat hanger.