Can I create a login that would direct my customers to a different page depending on the device they are on?

PRESSERO > *Pressero FAQs
It is not possible for the system to direct the visitor to different pages depending on different devices they are using.
 
By default the user will start on the category page and from there they can choose the category and the products associated with that category. You may change the page the visitor starts on by going to: Admin > Site > Settings > General > Branding > Select the home page URL from the Drop down. This will apply to all visitors irrespective of the device they are using.