Longhaul trains have vacant berths towards their fagend of travel which if timely and notified live can be of use to general public and persons using railinfo. Eg. If a passenger travelling on S6 coach on 22634 train from HNZM and alighting at SRR his berth vacancy if known in advance to a person who wants to travel to TVC from SRR can patiently board the coach and wait for the TTE to arrive and collect the differential. A live chat feature could be of great help.