Don’t you have to push the button to transmit the signal to open your car door?
My 2016 ford does not transmit the code all the time for someone to scan and duplicate.
More worried about credit cards than my vehicle key fob.
And you coffee snobs: we only buy coffee in a can. Go to any grocery store and they offer dozens of options in cans, hard metal cans....
Pushing the button is for unlocking all the doors at once, including the trunk/hatch.
The car is always looking for the signal. If you are close, and a hand touches the door handle, that door opens - usually only the front seat doors have this...
If crooks have duplicated your fob, they are in.