That is not exactly true. You wouldn't want a passive RFID for your car, they are much easier to duplicate.

In this FOB, the car and the FOB exchange a sequence of encryption messages. Furthermore, the FOB never sends the car the same message twice. A microprocessor changes the sent message every time (based on an encryption key). This is the most secure method.

Okay, whatever. You obviously know way more about RFID than I do. But you completely sidestepped the main point I was trying to make about the fobgina having no functional value in this car (other than being a hole to stick your fob into if you don't want to keep it in your pocket). You previously stated that the keyhole powers the fob if it has no battery. What I'm saying is that there's no value in doing that as far as I'm able to see. i.e., the functions of the fob that require power won't/can't be used while the fob is in the keyhole/fobgina anyway.

Probably places it closer to the RFID antenna/receiver.

Ok, you busted me. :rofl2: That would make for one interesting 911 call, wouldn't it?

The FOB performs several functions:

1) It allows you to remotely lock/unlock doors and activate the emergency alarm.
2) Allows you to lock/unlock the doors and trunk if you are in the proximity of the car.
3) Allows you to start the car as long as the fob is inside the car.
4) Prevents other people from unlocking your door by pushing the buttons on the door handles.

Obviously the FOB is designed to be beneficial if it has batteries. If it runs out of battery they still provide you with some ways to turn your car on until you replace the battery. If the FOB has no battery, you cannot remotely lock/unlock your car. That is the same with any remote key-less entry system.

My apologize, but I fail to see what your point is. Are you saying that a device without batteries is (mostly) useless? Yes, I agree it is.

From the 370Z Service Manual:

No, I'm saying that the fobgina is useless, not the fob itself. As I previously mentioned, just to experiment, I have taken the battery out of my fob, left the fob in my pocket, gotten in my car and it still starts my car. So obviously the fob does not need power in order to start the car. So what's left that does require power? Well, you mentioned pretty much all of them above. But here's the rub. You can send power to a fob with a dead battery by sticking it into the fobgina, right? Well, you're not going to remotely lock/unlock the doors or activate the emergency alarm while the fob is stuck inside the fobgina. Or to put it another way, by sticking your fob into the key hole, it'll power up the buttons on your fob, but your access to those buttons will be obstructed by the very fact that you have inserted the fob into the key holder. So what's the point of even having a fobgina to stick it into? As I said, you don't need it to start the car up.

Is the fobgina© where the dealer sticks a new remote into to program it with the Consult III? You have have up to four (4) remotes.

Oh, good question! If that's how they program additional remotes, then its necessity suddenly makes a lot more sense.

The patent. Kind of obtuse - maybe some info to be gleaned..FOB integrated key

i'm still holding to my theory that the fobgina is there because we like to stick stuff in holes.

i'm going to consult with the nissan engineers on this one, brb.

Intelligent key port aka fobgina question............He said fob-gina

I was at my dealership when a couple came in about getting the battery changed and the guy told them he could do it and the battery costs alot or you can go buy one yuorself and and do it yourself and save some money.

When you took the battery out did you discharge any residual current remaining inside? I.e. press the buttons until they didn't work anymore? That would help determine if it uses passive or active RFID.