Here is an useful news found in New Indian Express:
Indian Railways has modified rules on identity proof of passengers travelling on tickets issued under its Tatkal Scheme, it was officially announced. As per modified rules, there won’t be any need to mention or furnish photocopy of proof of identity, while booking a Tatkal ticket or indicate the same while booking tickets through the Internet, according to a statement issued by the Western Railway.
Only one passenger needs to produce any one of the following proofs of identity in the original during the journey, in case a group of passengers are travelling on Tatkal tickets, according to the statement.
As per the statement, documents to be furnished as identification proofs include Voter’s Photo Identity Card, Passport, PAN Card, Driving Licence, Aadhar Card, Photo Identity Card with photographs with a serial number issued by central or state governments, student identity card with photograph issued by a recognised school or college, passbook of nationalised banks with a photograph, as well as credit cards issued by banks with laminated photograph.
According to the statement, other identification proofs include photo identity cards with serial number issued by Central government or state government run public sector undertakings, similar cards issued by district administrations, municipal bodies or panchayat administrations.