Check my message. I feel certain this is your best opportunity to solve your problem. I would upload a picture but I can’t seem to make it work. I am new to this forum but it seems to be a take9ff on the real JLWrangler forum where I am more respected.
Please check out ajtdesign-llc.com. I really think this is what you need. The fob comes in most colors to match your Jeep. Let me know if you like it.
They did not post the size specs so I did not know if it would fit. For now, I ended up finding a giant lock box that works fine. It is plastic and could be cut, but the surf spot is very public. The JLU 2.0T has started proving frustrating so I have also started taking the Taco to surf instead of the Jeep.
Also for trademark reasons I had to change my user name to CoolToys