Foreign nationals are required to carry their passports with them at all times while in India.
You are requested to retain your encashment certificate while changing foreign exchange at your hotel or bank.
Due to security reasons, you are not allowed carry batteries in your hand luggage on flights. Please ensure to remove your batteries from your camera, calculators or any other gadgets.
You are not allowed to carry any hand luggage, expect for your passport as you are requested to pack everything into the luggage to be cargo.