First, there is almost no data on your device. It is limited to the browser session you have open and the most recent pages you have open. This is by design, and it insures that a) everyone who has access is always looking at the most current data and more importantly the same data, and b) it almost eliminates the risk of losing critical data if you lose your phone or it is compromised in some way.
Second, you are even secure when sharing. If you want to share information you are looking at in other systems it usually involves sending a screen shot or actual data across the wire in the form of email. Visual KPI avoids this issue by using links as the sharing mechanism. These links are easy to share, specific to what you are looking at, and best of all they contain no sensitive data. If they are sent to someone who isn't an authorized user on the system, the link is useless.
Read more about mobile device security here.