I understand the SanDisk Extreme USB 3.0 Flash Drive comes with some sort of software security. Is this optional or must you authenticate the device to use everytime?
“Is this optional or must you authenticate the device to use everytime?”
Both.
You can store files in the confines of the security app in which case you need to authenticate each time you use the app. And you can store files outside the security app in which case they are available without authentication.