" ..airlines may offer information to passengers at the arrivals or each city ..."
The amount of traffic going trough airport is growing every day. Most of the traffic is either businesses or tourist and almost every one of them carries a mobile phone. It will be excellent idea to introduce and promote your products or services to their mobile phone while they arrived or waiting to board their aircraft. Tourism promotion may communicate in an effective way to the newcomers and airlines may offer information to passengers at the arrivals or each city as a loyalty strategy programs.