Such questions need to be attempted on your own to test your creative writing skills. However, these points might help you elaborate:
- e-ticketing provides tickets that are stored digitally
- it is difficult to steal or lose them
- travellers using e-tickets need to provide a proper photo-identification proof, thus making it very difficult for touts to buy tickets under false identifications
- it cuts out the 'middle man' from the picture, thus combats the corrupt practice of black marketing.