Engadget notes that while car makers are worried about the possibility of car hacking, a paper from the University of Washington shows that simply by using stickers and altering street signs is all it takes to send an autonomous vehicle off course. The stop sign above, for example, is perceived as a speed limit indicator.
It's easy to see the potential problems. You could make these stickers using a printer at home, so anyone from dedicated attackers to pranksters could try this. It might lead to a crash the moment someone alters the sign, but it could also produce long-term chaos -- picture your city closing a road until maintenance crews can scrape the stickers off a sign.
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