This technique to steal cars has been used for quite a few years now. This is certainly not new. It's done with quite simple equipment (basically a directional antenna and amplifier).
Also keeping your key safe in a faraday cage isnt safe as the coding system has already been cracked in 2012/2013.
4 years ago there was a big lawsuit between volkswagen and a 3 man team of security specialists (from the university of Nijmegen and Birmingham) because they showed the algorithm wasnt safe at all.
https://www.theguardian.com/technolo...ing-codes-cars
So this is about actually cracking the code, not spoofing the key. (for that you need about $150,-on equipment)
VW is one of those companies that rather sues people to keep them quiet instead of learning from their mistakes. But everyone knows that if 3 university schooled scientists can crack that code, a 16 year old russian kid can do it too on a sunday afternoon....
Its the reason why I also opted out for keyless go on my volvo. That raised some eyebrows with the salesman
