Activate the Spyglass's Radar by clicking the "Radar" button. Once the first scan has been completed (after a couple of seconds), the avatars near you will be displayed on the Spyglass HUD.
The name of the persons near your will be shown, your distance to them, their coordinates, and what they are doing (sitting, flying, typing, etc.). You will also see a row of "action buttons" with which you can interact with people.
The names are color coded according to the distance to the other avatars:
Next to the name of a friend you will see eight action buttons:
Escbutton to go there.)
If someone from your friends list is in the same region you are currently in, the name of your friend will appear in the radar as well, and no matter how far away she or he is (the SL limitation does not apply). Also, friend's names are highlighted.
Note that the radar's scan range is limited to 96m (this is an SL limitation).
The radar may change too quickly to be able to react to the changes to use the action buttons. (In fact the radar works as quickly as the lag in the sim allows — it adopts the scanning frequency automatically to minimize lag.) For this reason, you can freeze the radar. You do this by clicking the radar button once again. It will become blueish and you'll see a message that the radar has been frozen. Now the names won't change for as long as the radar is frozen and you can easily use the action buttons. Clicking the radar button once more will unfreeze it again.