The Smartcard Machines located at Andheri Station - East, always have one or two strangers using the same. It has been noticed they pose as Railway staff or some authority given to them by the Railways. They try to assist and help passengers when there are long queues, but at the sametime it has been found there is some foul play by these people. I have an incidence to quote that last month one of my relatives had a smartcard. One of those strangers try to help her out with her card and book a ticket for her. No doubt they are help passengers but same time there is a play by them. They used her card for the ticket, gave the ticket to her, and returned a zero balance card of someone else. What can be seen from this transaction that they try to help, take your card and give you a zero balance card and in the rush hours you do not notice this. Then he uses to cards to play further with other passengers. This is a serious offence being committed and the Andheri East Railway staff need to take this matter up with the RPF immediately. Kindly arrange to make special visits to the smartcard machines at Andheri East and try to catch the culprits immediately so that the disease does not go any further.