Yes, the App will display:
"Mobile Access Disabled'
"To enable, go to Controls ... Mobile Access"
It would be better
to have the App hanging, like when you park in the basement of a building.
Using a metallic car cover could also provide a Faraday shield.
Also
Supercharger locations used can be retrieved.... and
Public chargers using the billing history.
May be it's a good time to get a folding bike or a OneWheel skateboard that you can have in your trunk or frunk.
Using a Bus or any public transportation is another option,
if you can buy tickets with cash.
However any “ridesharing” (Uber, Lyft), “car sharing” (Zipcar, car2go), bikesharing (Capital Bikeshare)
require using a credit card...
Note: Having a gym membership could be a good excuse for not be at home...
And a good advice is to have your 'partner' sitting in the rear seat, in case you pass a red light and receive the picture at home.