Would it not be easier to forge your passportuse a cotton wool bud ( like what you clean your ears with) and dip it in a small amount of nail varnish remover until it is slightly damp, gently sponge off the ink. Then use a damp wet cloth to remove any excess nail varnish remover. Wait till dry, then write your own name
or another option is use some very fine grade sandpaper (320 grade) and gently sand off the ink but be careful not to sand all the way through the ticket