Industries and Transport Minister P Thangamani announced today that the Tamil Nadu Government would soon launch hand held Smart Travel Card with `Top Up` facility for the benefit of bus passengers and conductors across the state. The minister said the smart travel card would not only benefit commuters, but would also ease the work of Conductors in avoiding short-change problems. He said the ticket fare will be deducted from the smart travel card. Stating that it was initially introduced in Metropolitan Transport Corporation (MTC) buses in Chennai city on an experimental basis at a cost of Rs 3.55 crore, Mr Thangamani said the scheme would be extended to all buses and also to extend this scheme to Chennai Metro Rail.