Looking down at my keychain I see the following.... Car keyHouse keyBathroom key (work)File cabinent key (work)So we know #1 is gone #3 is not necessary for me -- I can just keep it on my desk #4 is not necessary for me -- I don't keep anything valuable at work / have no security concerns at work. We have an open floor plan and finger print readers to get in so no actual work key. Now we circle back to #2. Where am I going to keep 1 key? By itself, it will be easy to lose as it can fall out of my pocket undetected. I don't know how I feel about a smart key for the house even though that may be the answer. I recently spent a lot of money to change my front door and inside garage door lock to Medeco locks though, so I'm not inclined to spend more on locks now. So what say you guys? What will you do when the car key in your life is no more?