To save battery life, default settings on iPads and tablets, like Chromebooks, generally go into sleep mode after a set amount of time. Defaults are as early as 15 minutes in some cases. This puts any open browser and any in progress evaluation to "sleep" as well.
The server which supports a browser form is constantly questioning the browser by asking "are we still connected?" This is both a function of security and error control. if the server fails to receive a response, the server will disconnect due to inactivity and a potential security threat. In the Evaluations application this is set to 90 minutes. After 90 minutes of "inactivity" the user is logged out and anything they were working on, if it hasn't been saved, will be discarded.
On a desktop computer, sleep mode is usually not set and therefore a constant connection between the browser form and the server can be maintained. A user entering an evaluation on a desktop should not encounter a disconnect due to inactivity.
What is the prevalence of iPads and tablets at your district? Should we attempt to extend the application time limit to accommodate those users? If so, what is a reasonable time before the user is logged due to inactivity? Please keep in mind that security is an issue.