The term "3DS" primarily refers to the Nintendo 3DS, a foldable, dual-screen handheld game console known for its autostereoscopic (glasses-free) 3D display on the top screen and touchscreen on the bottom screen. It was released by Nintendo in 2011 as the successor to the DS and is backward-compatible with Nintendo DS games. It also features motion sensors, cameras for taking 3D photos, and online connectivity via SpotPass and StreetPass. "3DS" can also refer to Dassault Systèmes, a software company specializing in 3D design and product lifecycle management software.