No effort, and the machines are a fraction of the cost.

Thieves are boosting the fob's signal. So it's not practical for car owners to measure a safe distance.

This is what I do as well. I'm usually working on remote linux servers, but if I need to do something locally I ssh to a VM.

There was a zero-waste grocer in Austin, but they recently went out of business. http://austin.culturemap.com/news/restaurants-bars/04-25-18-...