Turning the FOB into something the size of a credit card

[Roadrnnr]

Greetings, first post but long time reader with a bit of an advanced question.

I have a 3.8 GT that I'm considering putting a Compustar alarm into. Now the alarm is going to give me a 2 way remote which will pretty much make the stock FOB useless except a working transponder which I must have on me of course. I'm considering taking the transponder out of the stock case and putting it into an enclosure that's the size of a credit card so I can simply have that in my wallet as my immobilizer. Look at it this way, I'd never leave home without my wallet

So far I've seen this as a possible enclosure:

http://www.tekoenclosures.com/enclosures/pocket-card.htm

However, It's kind of thick. has anyone seen something like this that's not as thick or something that will fit in a wallet?

Thanks in advance.

 

[Rockynight]

1.) The factory FOB is very sturdy. I would worry that this after market would not be as strong.

2.) I would worry that the first time you took it in with a problem they may state that the customized FOB was the problem. As a person that trains mechanics one item I have to go over and over again is not to have preconceived diagnosis. But sadly it does happen.