Last week, I started keeping my car keys in the freezer, and I may be at the forefront of a new digital safety trend.

Let me explain: In recent months, there has been a slew of mysterious car break-ins in my Los Feliz neighborhood in Los Angeles. What’s odd is that there have been no signs of forced entry. There are no pools of broken glass on the pavement and no scratches on the doors from jimmied locks.

But these break-ins seem to happen only to cars that use remote keyless systems, which replace traditional keys with wireless fobs. It happened to our neighbor Heidi, who lives up the hill and has a Mazda 3. It happened to Simon, who lives across the street from me and has a Toyota Prius.

And it happened to our Prius, not once, but three times in the last month.

The most recent incident took place on a Monday morning 10 days ago. I was working at my kitchen table, which overlooks the street in front of my house. It was just after 9 a.m., when one of my perky-eared dogs started to quietly growl at something outside.