cyclists use their smartphones to locate, check out, and lock bikes.

Shareable reports on ryan rzepecki’s social bicycles system (SoBi):

Instead of relying on kiosks and docking stations to connect users to bikes, cyclists use their smartphones to locate, check out, and lock bikes–everything is portable, wireless, decentralized, and self-contained. The tech is stored in a small “lock box” attached to the rear wheel, which connects the bike to a central server. Users create an account with SoBi, find a bike through a call or smartphone app, and receive a code which they can use to unlock the bicycle from an ordinary rack. They can just enter their account info directly into the lock box; they use the same pin code every time, “just like with a bank card.”

20 bikes to be tested in nyc in 9/2010.