'Game Boy' gadgets used to steal cars by imitating key fob signals
techspot.com> "What is most worrying is that something sold decades ago has been repurposed to help thieves. With plenty of old gadgets collecting dust, some will tinker with them in the hope they can unlock a car”
As always they quote people with absolutely no knowledge. Pictures are obviously a look-alike shell (probably sourced from china with a pi or similar already inside), and adding radio functionality alone is a bit more than just 'tinkering'.