In most cases, you will only need to go to check-in when you have checked-in online if you need to drop off an item of hold baggage. Please ensure that you are aware of the hand baggage requirements for your specific airline before you travel.
You may go through security with either an electronic or printed boarding card - electronic boarding cards on smart-phones are acceptable.
If you are travelling on a Non -European passport, your airline may request a VISA check prior to going through security - please visit your airline's ticket desk on the ground floor prior to going to Security and the Departure Gate to have your boarding card validated.