How does an E ticket work?

Related questions

1. Can I travel with Xerox copy of train ticket?
2. How can I get my money back from Irctc?
3. How can I check my ticket in Irctc new website?
4. Can I show E ticket on mobile in train?
5. Is Irctc SMS enough?
6. What is Irctc Rail Connect app?
7. Does Irctc not work at night?
8. What is E ticket and I ticket?
9. Do I need to print Irctc ticket?
10. Is PNR same as booking reference?

Tags

1. #confirmation
2. #stored
3. #which
4. #computer
5. #ticket
6. #system
7. #number
8. #flight
9. #before
10. #ticketing
11. #version
12. #check
13. #paper
14. #airline
15. #boarding
16. #using
17. #print
18. #receipt
19. #hours
20. #online
21. #electronic