Can I show tickets on my phone at airport?

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Tags

1. #passenger
2. #tablet
3. #laptop
4. #longer
5. #printout
6. #issued
7. #phone
8. #operators
9. #airport
10. #image
11. #ticket
12. #should
13. #aircraft
14. #electronic
15. #enter
16. #device
17. #produced