This is another topic that comes up all the time in the Spyder world. You hear all the time that 

"My dealer says you can't drill your key because it has a chip in it". 

It is true that there is a security chip in the key that works with the DESS but as long as you stay away from that chip you'll be fine. If fact I don't think anyone would ever drill where the chip is but just to be sure here's some pics of where the chip is and where others have successfully drilled their keys and added a key ring. 

Here's another option that we sell.

https://www.lamonstergarage.com/can-am-spyder-ips-billet-key-cover-lamonster/