The SWTOR Security Key App is a functional but dated tool. While it succeeds in its primary mission of securing accounts, it does so at the cost of user convenience. The app is high-maintenance for both the developer (due to maintenance needs) and the user (due to difficult device migration). However, for the dedicated SWTOR player, the trade-off of security and free in-game currency outweighs the dated software design.
Note: Many security experts recommend using a more robust authenticator (like Authy or Google Auth) for all services. However, SWTOR uses a proprietary closed system that third-party authenticators. Users are forced to use the official SWTOR app or a physical hardware key (if available/valid).