Dog tag

Dog Tags are collectible items in Metal Gear Solid 2. To collect them. simply hold up a guard, get in front of them and look at them in first person view if there is a twinkle on their chest then they have a dog tag you can obtain. You can make them give up the dog tag by aiming at their head or groin. They will then shake their dog tags (and other items) for you to pick up.

Some of the Guards will refuse to give you anything at first. If this is the case, then shooting the guard in a non-lethal area or aiming a more potent weapon (such as the Nikita) will usually persuade them to give it up.

You can view dog tags by going into the special menu and selecting Dogtag viewer.

Rewards for collected dog tags include:

Snake:
 * Infinite ammo bandanna - 46 dog tags
 * Stealth Camouflage - 76 dog tags

Raiden:
 * Brown Wig (infinite ammo) - 73 dog tags
 * Stealth Camouflage - 120 dog tags
 * Orange Wig (infinite hanging meter) - 170 dog tags
 * Blue Wig (infinite O2 gauge underwater) - 218 dog tags

The names on the dog tags are taken from Konami contest winners and the games designers, and one dog tag in the Tanker Episode is named for J-Rock singer Gackt, who also did a Japanese television commercial for MGS2. Also, some characters have their tag on them, or the tag of another character in the game.

Dog Tags would later become collectible in Metal Gear Solid: The Twin Snakes.