On 28th of August, KLM connected hundreds of people in Amsterdam and New York via a live interactive video display. The display let people on the streets of the two cities come face to face with one another, just as the French railway (SNCF) had done with Lyon and Brussels in 2012.
However the KLM version had a contest built into it. The connected people were asked to High Five each other and for every successfully timed High Five, the participants got two tickets to New York or Amsterdam.