Staff++ provides a way to be notified when it thinks a user is using alternative accounts. The detection is really simple so don't expect miracles. It will detect the most basic and obvious alt accounts. Alt detection is disabled by default
# will not send out any notification unless at least the IPs are matching
How it works
When enabled the system will start recording players IP addresses. Every address a player ever connects with gets stored. If a player connects with the same address as another player his detection score is upped by 1.
When a player connects we check his username against all other users known to the server. Similarity is calculated using the Levenshtein Distance Algorithm. Based on this a score is returned:
70% similarity --> score 3
50% similarity --> score 2
30% similarity --> score 1
Detection trust levels (score)
The trust level is the result of the above mentioned checks. We have four levels of trust:
Only one case can trigger the POSITIVE level. When a username has an IP match and a username match of at least 70%. We can be fairly certain something is going on with these accounts
Triggered when username match is between 50% and 70% and IP is matching. Or when username match is at least 70% and IP is not matching.
Triggered when username match is between 30% and 50% and IP is matching. Or when username match is between 50% and 70%, and IP is not matching.
Triggered when username match is between 30% and 50% and IP is not matching. In general I would not recommend listening to alerts with this trust level as most likely this will not be a reliable result
Triggered when IP is matching but there is no username similarity.
If the option same-ip-required is set, no level is triggered unless the ip is matching as well
Listening to events
Currently Staff++ supports 2 ways of being notified when an alt account is detected.
Since some accounts might actually not be real alt accounts but still trigger the system, a whitelist is added to ensure that staff members can ignore these false positives.
The ignore a match you can use the /altwhitelist command.
/altwhitelist add playerName1 playerName2
/altwhitelist remove playerName1 playerName2
/altwhitelist list pagenumber PageNumber is optional.
This will add or remove certain user combinations from the whitelist. When added to the whitelist this users combination will never trigger a detection event. Adding a combination to the whitelist tells the system that these 2 accounts are not alts.