The Orly Airport in Paris, France is using holographic staff to welcome passengers. The holograms replace signs that provide directions in the airport's terminals. The holograms appear when real airport staff press a button. People in the airports keep trying to touch the holograms and little kids wave at them. They are not true holograms. Gizmodo says they are projected onto a human-shaped piece of Plexiglass. Take a look:
