System Tray program which constantly monitors for the presence of an LG scanner connected to your USB port. If your LG scanner is connected, and DETECTOR is running, you can press the one-touch scan button on your scanner to begin scanning (if your scanner has such a button). This System Tray program also enables you to run the LG scanning software from the System Tray.
If you use the LG software to scan and you use it a lot, then keep this program in your System Tray we have not heard of problems with it. If you do not use the LG software, or you do not scan very often, then disable DETECTOR with Startup Manager.