As the national design collection of the United States, Cooper Hewitt, Smithsonian Design Museum in New York City is dedicated to historical and contemporary design with a collection of over 215,000 objects. Since its founding in 1897 as the Cooper Union Museum for the Arts of Decoration, its collection departments have been defined taxonomically by materials. In 2022, the museum created a new collecting department for the first time in its history, acknowledging that Digital collections represent a separate “material.” The introduction of a Digital department stakes a claim that digital design is itself a separate discipline with its own needs of collections management, curation, and conservation. Digital design as both process and product is now pervasive throughout design fields and the collection will continue to grow as the museum strives to represent contemporary design practice. While the museum’s early digital collecting came from a lineage of graphic design and typography, this article discusses the challenges inherent in developing new taxonomies, typologies, classifications, and collections management and preservation processes.