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The [link url=http://www.3mdeutschland.de/3M/de_DE/unternehmen-de/ target=_blank]3M[/link] company is currently testing road signs, which provide information for vehicles, such as GPS data or locations of road works. This information is encrypted in a barcode, which is invisible to humans and can only be read by the vehicle’s front camera. Is this a future protection against hacking into autonomous vehicles, as it was recently done [link url=https://www.autoblog.com/2017/08/04/self-driving-car-sign-hack-stickers/ target=_blank through specifically applied stickers on road signs][/link]?