Door unlocking options

I have two 2010 models. On one, with key fob in my pocket, I can unlock the front passenger door and hatch, but on the other car, I can only do that with the driver's door and then have to manually unlock the whole car. Yes, I could fish the fob out of my pocket, but I have a lot of other things in that pocket.

My question is: is the different behaviors based on hardware or programming? If the later, I'll dig out TechStream and change the programming.