ID:2016645
 
(See the best response by Ter13.)
I need to read how much latency individual players are experiencing (they use .ping to know it for themself)

I need it so I can apply a buff to players with bad connections to make the game more fair since it is an action PVP game.
Best response
http://www.byond.com/forum/?post=1955374#comment16996093

Translation:
I did this a while back. It should give you an idea of how to proceed. This is probably a bit beyond you away.

It uses Javascript to monitor the ping of each player. This ping value is exposed to the object client. Pay close attention to how this is implemented .

I'm sorry my Portuguese is not better. I have to use translation software .
It works! Thanks