In order to significantly increase bicycle commuting, RAFAA figures that the city of Copenhagen would need approximately 25,000 bicycles. Along with the increased number of bikes, you need a lot of storage (about 20,000 sq meters) and an advanced method for tracking the bikes. RAFAA proposes installing a GPS tracking system in addition to a wireless networking system, so the bikes are connected to both each other and to a large reservation system. This will help enable the city to more accurately judge where bikes should be placed. The online system would also allow riders to reserve bikes before their arrival, say at a train station, and bikes can be checked out with a credit card or a Maestro card.