Disabling a Key Fob Button

My pocket was always mysteriously opening my trunk. After a bit of thought, I realized this was because my keys were in there and hitting the trunk open button on my key fob.
I tend not to use my key fob to open my trunk that much. After looking through my manual I couldn't find a way to disable the key fob button to open the trunk and keep the button in the cabin working. I suppose going into the car's computer could do it, but I'm not the computer hacking type.
What I have here is a simple, fast and easy, fully reversible way to disable any button on a key fob.
My car is a GM, I know other brands use a similar system, but your car may vary.
Materials: Little bit of plastic bagging
Tools: Scissors, coin, brain, hands.

Enjoy.

Step 1 Theory

I don't like magic. If you know electric theory at all, you probably won't need to know this. But if you don't, this will demystify it.
The buttons on a key fob work by having a conductive pad touch an open circuit on the Printed Circuit Board (PCB) and therefore close it. All that has to be done is stop the circuit from completing. We need an insulator between them to disable the button.

Comments

[Akedos]

I just used masking tape under my panic button, concept is the same though. Seemed I kept bumping it when I bought a new fob. Problem solved.

[luvit]

i don;t have a key fob. and my trunk doesn't open. you have problems, i don;t.

[JakeTobak]

Good idea. I did this with my alarm button, but I just cut the button out, your way is less destructive.