My company (www.stantonconcepts.us) is in the business of coming up with innovative security solutions. As a result of some other work we were doing we came up with what may be a novel and better bike lock that's an alternative to chain, cable and U-Locks.
One version of the new lock design uses high strength, light weight, high flexibility grade 5 titanium, itís not easy to cut, itís very easy to store, itís very light, it can secure and be secured to a wide variety of objects and the owner can choose his own padlock.
Here's a link with some photos of the prototype locks; http://www.stantonconcepts.us/bike%20lock.html from this page you can navigate to a preliminary data sheet and an image gallery with additional photos.
Any feed back is really appreciated.