Source: As worded by Indian Railways, Government of India

Anyone of the passengers/the passenger booked on the tickets issued from computerized Passenger Reservation System (PRS) and internet (i-ticket), undertaking journey in AC-3 tier, AC-2 tier, 1st AC, AC Chair Car and Executive classes, have to carry anyone of the nine prescribed proofs of identity (in original) during the journey and produce the same as and when required failing which all the passengers booked on that ticket will be treated as without ticket and charged accordingly. The list of valid proofs of identity are as under:

• Voter Photo identity card issued by Election Commission of India.
• Passport.
• PAN Card issued by Income Tax Department.
• Driving Licence issued by RTO.
• Photo identity card having serial number issued by Central/State Government.
• Student Identity Card with photograph issued by recognized School/ College for their students.
• Nationalized Bank Passbook with photograph.
• Credit Cards issued by Banks with laminated photograph and
• Unique Identification Card "Aadhaar".