very impotent update now a days for pedestrian pilgrims it is mandatory to bring original Aadhar card. If they are not having the Aadhar they won't give the darshan ticket in the middle of the path, each and every pilgrim have to bring the original Aadhar card to tirumala.
e can bring another id proof also
Voter card
Ration card
Passport
Driving Licence
Pan card