An exemplary elevator passenger interface device includes a passenger communication component that facilitates communications between a passenger and an elevator system. Such communications include passenger input to request elevator service and information provided to the passenger. A controller controls the passenger communication component to control its functionality including providing selected information to the passenger. The controller includes a customization module configured to change the functionality of the passenger communication component responsive to authorized user input that is distinct from the passenger input. The authorized user input includes a selection of at least one of a feature used to present information to a passenger or a feature used to allow a passenger to request elevator service.