I keep my smartkey separate from other keys. Also, every once in a while, I check my keyrings and see if there's something I can remove. You might be surprised on what you may find. One time, I was carrying around a key for a lock that busted 6 months ago, and a key for basement deadbolt that was replaced a year ago. My worst example was a spare car key for my dad's van he sold two cars ago. Aside from those surefire junkers, you may find keys that you may not need to carry around everywhere with you. Do you really need your boat key with you all the time?