In addition to all of the system utilities, TrustGo offers a few useful tools in case you lose your phone. In order to use them, though, you must set up a free TrustGo account. Once you do, you can use the Data Backup to back up your contacts, SMS, and call history to the cloud. You can also log in to TrustGo.com to locate your phone (if GPS is enabled), lock your phone, sound an alarm, or completely wipe the data from your phone.
In the event that your phone gets stolen, TrustGo's new Candid Camera features can be used to help identify the perpetrator. To use it, just lock your phone remotely from TrustGo.com. Then, if the thief enters an incorrect password three times, your phone will automatically snap a photo and e-mail it to you.
Overall, TrustGo offers a wealth of security and performance tools, all for free. You can run its Security Scanner as needed, or set it to run automatically. Meanwhile, the app itself doesn't appear to tax your battery in the process.