Spotting

Spotting is a concept in Battlefield: Bad Company 2. When a player is spotted a red triangle appears over their head and reveals their position to the enemy team and an icon appears on the map. Infantry and Vehicles can both be spotted. Being spotted is not permanent, as the triangle disappears after a certian amount of time or until the player is killed.

How to Spot
There are several ways to spot. The most basic is to press the Back button on the Xbox 360 controller, the Select button on the PS3 controller, or the press the key Q on a computer keyboard. A second way to spot is use the Recon's Motion Sensors. A final way is to use the specializations Sniper Spotting Scope or Electronic Warfare Package.