: Perhaps the most popular feature, these are credit-card-sized images of individual members. They are usually random, encouraging fans to trade or collect them.
: KiT albums often feature exclusive photo galleries, synchronized lyrics, and music videos protected by copy-protection systems. k album
: Some albums, like aespa’s Savage , include AR portals that allow fans to virtually "visit" the music video sets using their phones. : Perhaps the most popular feature, these are