Considerations Regarding Screen Size Selection for Self-Service Devices: An NCR Position Paper

Is bigger really better?
Does one size fit all?

Certainly there are several choices regarding screen size for your self-service device, so how do you select the right one for your environment? NCR’s Human Factors Engineers have found that psychological, perceptual, physical and practical factors all contribute to screen size selection. This paper focuses on the key differences between screen sizes used in self-service deployments. From the very small screen of a tablet to an extra large display, we will discuss how one size does not fit all, especially when considering the associated application, the environment and usability.

The social and emotional elements that contribute to a user’s experience with self-service technology can make a lasting impression. The self-service device itself may create a “wow” or “cool” factor, either in design of the hardware and the enclosure or simply by the sheer size of the screen and related content. While the “wow” factor may entice a user to approach the device, it is important to remember that is only half the battle. Once the consumer is using the device, he should find the screen size appropriate given the social context for use. For instance, are there privacy aspects that need to be considered for personal transactions, such as item ordering, bill payment or online banking? Or, is it acceptable to perform the task in an open, public space, such as when accessing a social media site or commenting on a shopping experience in which more than one user may be interacting with the device at the same time?