We have customers that need to be able to edit content on the website from mobile devices and tablets. I've noticed that DNN 9's Persona bar is not touch-friendly, and that nothing within DNN 9's admin side is responsive. In previous versions, we could get around this by pinching to zoom and what not. However, the Persona bar does not work with touch. I've seen some skins that essentially replace the Persona bar on mobile. Though, I'm thinking we shouldn't have to go that far.
Even tried on a Surface tablet (touch only, no mouse) and I'm unable to touch-through to where I'm trying to navigate within the Persona bar.