Airport service rep 'Ava' smiles but won't help with bags

'Eva' is a hologram-like avatar that will help customers navigate LaGuardia, Newark and JFK terminal buildings. (Ashmir Narain)

Passengers at New Jersey's Newark Liberty International Airport will always get a smile from this customer service representative. Just don't ask her to carry luggage.

That's because she's an avatar.

The Port Authority on Friday will unveil the computerized, hologram-like image named "Ava" in the international arrivals area in Terminal B on Friday. She's programmed to answer passengers' most frequently-asked questions.

The Port Authority is spending $180,000 to place the high-tech help at Newark, Kennedy and LaGuardia airports.

Here's more on what she can, and can't do.