Abstract: In Indian Railways transport system and in most other public transport system a passenger cannot book for a ticket after the charting of train is done and a seat remains unused if a passenger did not board a train or cancels his ticket after the charting of train is done our approach to overcome it is by a dynamic seat allocation system using QR Code containing the URL to an online website for railway reservation has been developed. In a QR code a passenger specific URL is stored, when Hand held Terminal device running on android OS encodes this URL by the Check-in an passenger which is updated in the central database and any passenger who don’t board on the train his QR code check-in procedure is not done and after the specific time interval the ticket for it is automatically made available in the system for booking to other passengers.