A recent decision by the Government might make your cross-country travel a little easier. There&rsquos talk of a new smart card that can be used across all Metro rail networks for a limited number of trips. But it will require you to charge them at the station when you go to avail the facilities in different Metro networks. All you need to do is carry some proof of identification. Presently, the rail corporation issued smart cards can only be used for travel within the Metro networks of a city. These were designed with the help of some foreign partners.