Wednesday, May 2, 2018

error message - Kiosk: If a function is not available, should there be a notification screen?


So if my kiosk cannot print or access account info—which are important features—should I introduce a screen to inform the user about that error after sign in (2nd screen in the example below), or somewhere else?



The error status is already displayed on the main screen and the menu option will be displayed in a disabled state once logged in


enter image description here



Answer



Depending on the context, you almost certainly should show an error message (in order to reduce the likelihood of the user trying to use a function that is currently unavailable). If the context is very public and so help/support is generally unavailable, you probably should show a more general error like "Out of Order" if those features are core features of your product.


If not, the error message should be clear and prevent the user from attempting the broken function if possible, as in this example (where the "EFTPOS unavailable" sign is actually physically blocking access to the EFTPOS/card slot):


Photo of a CityRail ticket machine with


Image from SMH.com.au


If you do choose to show an error message, it's important to provide the right error message: simply stating matter-of-factly that an issue exists (as you have in your examples) isn't enough—you generally need to provide a call to action to allow the user to rectify the issue.


For instance, when our kiosk software loses its persistent connection to the server (something it needs to function correctly at all), the error we show says, basically:




Kiosk Unavailable


This kiosk has lost its connection to the server.


Please reboot the kiosk or call the helpdesk on 1800 000 000



Notice that we tell them both what is wrong and what to do about it.


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