You can get total bike security with Pinhead. They make locks for all of the major bicycle components... frame locks, quick-release and solid axle wheel locks, seat post and saddle locks, and headset locks. Locking your bike frame is not enough production, unless you have the Pinhead system!
Pinhead locks remain on your bike all the time adding total bike security. If you need to remove your wheels for servicing, or adjust your saddle height, your Pinhead key lets you do this quickly and easily.