Here's a clever solution for bicyclists who don't feel like carrying around a bulky lock with them. This Bicycle Security system has a lock built into the back of the seat, so when you roll up to a bike stand you just have to fold the seatpost down and lock the wheel and seat up. No more lugging a hefty lock around.
This is a great idea, especially for cyclists in cities like NYC where bikes get stolen in about 30 seconds if they aren't locked up properly on the street. Let's get this implemented in new bikes from now on, OK? Heck, even just sell the seatpost as an add-on for current bikes and it'll do great. Let's make it happen.