Unfortunately, I believe that banning those technological devices is not going to help. The thieves are certainly not going to abide by the law. They'll get them from other sources.
The only thing it did was create a bit of panic in my students, who wondered what they would use to learn. Banning those devices is not going to impact auto theft. It's probably only going to harm training and education.
On one small note, yes, those devices cannot open some of the cars, but we tested them and, unfortunately, they work on some of the new car models.