A microSD memory card from SanDisk Corporation (www.sandisk.com) that is designed for paid content. Using SanDisk's TrustedFlash digital rights management (DRM), it enables content to be distributed in a very compact, copy protected format to cellphones, digital music players and other portable devices that have microSD or SD Card slots. In 2005, the Rolling Stone's "A Bigger Bang" album was the first gruvi title to be released. See SD Card.