I have noticed that in rajdhani and shatabdi people are not bothered about charts. They just come to station, board train and start listening music or whatsappp or facebook etc.... when tte come then open mobile show ticket.
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As odd as it might sound having a paper ticket is also out of fashion mostly as people book online. A huge number of pax book online only and never bother to take print out. So sending sms on their mobile will be succesful only.
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Mostly people see chart only when they want to do some "timepass" like when some time is left in departure of train. ( Of them also are mostly senior persons )
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A good initiative I hope gets applied to all trains atleast superfast rajdhani and shatabdi. Paper saved would be huge.