In multiplayer mode, it says in the key mappings that the 'Q' key spots. So I assume that it's like the older games and you have to target someone and hit 'Q' to spot them. This works most of the time, but there are plenty of times where it doesn't work well. Like when I'm spotting from a UAV, for instance.
Is there a distance limitation for spotting?
When I try to spot, usually I jam the button a lot, I wonder is there any penalty for spamming the spot button?
How does spotting work?