Indoor advertising refers to advertising done on the interior of a place especially a building etc.
It is visible only to those who visit that place displaying the ads of the product that target a particular set of audience, therefore having a limited but specific visibility.
Indoor branding, it is prevalent in spaces like:
Airports
Railway Stations
Malls
Shopping Complexes
Retail Stores, etc
NON TRADITIONAL ADVERTISING
Contemporary mediums of advertising that rise and set with the changing trends and customer or audience preferences are called Non Traditional Advertising. For example, branding done on :