Will the Fob open and unlock the car without me pushing the buttons
I don’t know, will it?
Many fobs will do this if they are in a pocket and get squished.
With some Mazda it’s possible,
The advanced keyless entry is where things get more exciting. Using this system, available on many of our models including the Mazda6 sedan and CX-5 crossover, you’ll be able to gain entry to your vehicle without ever taking the key out of your pocket. There are “request switches” located at the driver’s, passenger’s, and trunk doors, that you can simply push to gain access while carrying the key. As with the key fob, push twice on the driver’s side door to open all doors.
That would require telepathic communication from you to both the fob and the receiver in the car. If you can do this, the X-files wants to talk to you.
On our 2016 Honda CR-V if you have the fob in your pocket all you need to do is grab the driver’s or passengers door handle to unlock the doors.