NEW DELHI: Indian Railways may allow use of more documents in addition to Aadhaar for authentication of their IRCTC account to book Tatkal tickets, reports Dipak Dash. Documents that are uploaded and saved in Digilocker such as PAN Card, driving licence and voter ID are likely to be included to the list for authentication of users, sources said.TOI has learnt that the railway ministry may come up with an update on Monday, a day before linking Aadhaar with IRCTC account of users come to effect. The matter was discussed at a review meeting chaired by minister Ashwini Vaishnaw on Friday. Around 2.2 lakh passengers book Tatkal tickets through the IRCTC website and app daily. Railways has advised travelers to connect their Aadhaar numbers with their IRCTC accounts to prevent any disruptions from July 1 (Tuesday).