Check in counters at Terminal 2. There was a time where there were X-ray machines, etc all outside. Where you have to queue up once to get things scanned and another time to check in.
Nowdays, to make things easier for passengers, you just check-in your luggage, everything else would be done in the background. Heard they have super power x-ray machines too.
Those machines in the middle are self service check in counters, for those without luggage?