Beginning in May, Lyft customers in New York City will be able to use Citi Bikes through the ridesharing app. Users won't need a separate account or login to locate or unlock the bikes. The Lyft app will automatically show how many bikes are available at nearby stations. When users are ready to ride, they'll receive a five-digit code, which they can enter in any dock at a given station to release the bike of their choice. Both of the services are popular on their own, so together, they could have a meaningful impact on transportation in New York.