As per announcement in Railway budget  2013-14 passenger have to submit self-attested Xerox of photo ID proof for booking tatkal ticket and the same ID proof is to be presented during journey. Tatkal tickets can be issued only on production of one of the ten prescribed proofs of identity shown under
1.Voter Photo identity card issued by Election Commision of India.
2.Passport
3.PAN Card issued by Income Tax Department.
4.Driving Licence issued by RTO.
5.Photo identity card having serial number issued by Central/State Government.
6.Student Identity Card with photograph issued by recognized School/College for their students.
7. Nationalized Bank Passbok with photograph.
8. Credit cards issued by banks with laminated photograph.
9. Unique Identification Card "Aadhaar".
10. Photo identity cards having serial number issued by Public Sector Undertaking of State/Central Government, District Administration, Municipal bodies and Penchant Administration.
But recently railway ministry announced that there is no need to provide Xerox copy of ID proof while booking tatkal ticket from September 2015 onwards, However a person who is travelling on that ticket has to proof his identity during journey otherwise he will be treated as without ticket.