ID (identification) is a request for help identifying an unknown piece—typically posted with a photo and the question 'can anyone ID this?' The ID request is fundamental community interaction: someone sees something they like but can't identify, and community knowledge fills the gap. Successful IDs demonstrate collective expertise—someone always seems to recognize even obscure pieces. ID requests appear across platforms: Reddit forums, Instagram comments, Discord servers. Providing accurate IDs builds reputation as knowledgeable community member. The practice reflects streetwear's information asymmetry—brands don't always make identification easy, and pieces circulate without clear provenance. ID culture has practical applications beyond curiosity: knowing what something is enables finding and purchasing it. The community's ID capability also serves authentication purposes—if no one can ID a piece claiming to be from a known brand, it's likely fake or fantasy.