Holotag

Holotags or  dog tags are a form of identification.

Background
Name tags used by the United States Armed Forces and the Brotherhood of Steel. Some variants include information such as the soldier's full name, signature, identification number, blood type, security clearance, expiration date, base of operations, and a slogan ''You think you can take me? You go right ahead'' printed below a barcode. Others contain name and address only.

Items

 * Brotherhood of Steel holotag (Fallout 3) - a holotag from a fallen Brotherhood soldier in Fallout 3. These can be turned in to Scribe Jameson as part of Collecting Holotags.
 * Brotherhood of Steel holotag (Fallout: New Vegas) - a holotag from a fallen Brotherhood soldier $$
 * NCR dogtag - a holotag from a soldier of the New California Republic Army, used to turn in as part of Arizona Scavenger or Tags of Our Fallen $$
 * Brotherhood of Steel holotag (Fallout 4) - a holotag from a fallen Brotherhood soldier in Fallout 4.
 * Danse's holotags - holotag belonging to Paladin Danse in Fallout 4.
 * Knight Astlin's holotag - holotag found on Knight Astlin in Fallout 4.
 * Scribe Faris' holotag - holotag found on Scribe Faris in Fallout 4.
 * Knight Varham's holotag - holotag found on Knight Varham in Fallout 4.
 * Paladin Brandis' holotag - holotag belonging to Paladin Brandis in Fallout 4.
 * Knight Rylan's holotag - holotag found on Knight Rylan in Fallout 4.
 * Dog tags (Fallout 76) - found on military and Brotherhood members in Fallout 76.