Due to short-time product life-cycle up to now touchscreens are not completely accepted in the field of investment goods. Therefore, there are few studies about ergonomical ease of use by touchscreens as device user interface.
The user has to be navigated through the storyline. No selected choice may offer scope for interpretation.
The navigation tree is reduced. The user is leaded through operating line. Therefore untrained personnel is able to work with that software. Different groups of people may use one instrument. Passwords and user profiles make sure, that sensitive datas are safe.