I am a Swedish citizen and will fly to Saudi Arabia (with approproate visa) shortly. My route is as follows; Gothenburg-Istanbul and Istanbul-Riyadh (GOT-IST-RUH). On the flight IST-RUH, I will be travelling with my mother flying from Stockholm (ARN-IST-RUH). We both fly with, and have booked our tickets at Turkish Airlines.
My question now is, can I travel to IST without my passport, meet with my mother in the international area of the terminal (provided that we end up in the same arrival terminal), receive my passport who my mother (who may pick it up from the visa application center) and give it to me for the continued travel.
In short; can I enter the terminal without passport, or do I need a passport already before entering the airport in Turkey?