Test takers of certain countries have to follow specific regulations to take the test in those countries.
To find out the exact requirements for the country where you will take the test, visit the official page at: http://sat.collegeboard.org/register/id-requirements
In India, the only acceptable form of identification is a valid passport with your name, photo and signature. No exceptions are allowed.
You MUST also carry your Admission Ticket with you.
You MUST also carry: Two No.2 pencils, a soft eraser, and an acceptable calculator. You are also allowed to carry a watch without an audible alarm, extra batteries, a bag or a backpack, and a drink and/or snacks to have during your break.
You should NOT take to the test center: Cell phones, iPods, iPads, laptops, cameras, audio/video recording devices, messaging devices, and so on.
For the full list of things that you MUST carry to the test center, can carry, and should NOT carry, visit this official web page: