Users can input a specific avatar name to see if that person is online and exactly which public room they are visiting.
: Using unofficial third-party programs can break the IMVU Terms of Service. This can get a player's account banned permanently. How to Protect Your Privacy on IMVU Imvu Active Room Scanner
These tools can monitor friend lists or specific usernames to alert the operator when a target enters an "active" state or a specific public room. Users can input a specific avatar name to