The Indian Railways Catering and Tourism Corporation (IRCTC) now lets users book as many as 12 tickets in a month through its website and app, if they've duly linked their account with Aadhaar. Users will have to verify their IRCTC account, through an OTP, that shall be sent to the user's Aadhaar-linked mobile number. Additionally, at least one passenger on the ticket booked beyond six tickets per month must be Aadhaar-verified. However, no Aadhaar verification is needed for booking up to 6 tickets per month, like earlier. Booking up to 12 tickets in a month through IRCTC is a three-step process. Once you're done with your IRCTC account's Aadhaar authentication, you'll have to add passengers with their valid Aadhaar numbers and select at least one Aadhaar-verified passenger while making your train booking.