In the past, coin-operated arcade video games generally used custom per-game hardware often with multiple CPUs, highly specialized sound and graphics chips, and the latest in expensive computer graphics display technology. This allowed arcade system boards to produce more complex graphics and sound than what was then possible on video game consoles or personal computers, which is no longer the case in the 2010s. Arcade game hardware since the 2000s is often based on modified video game console hardware (Such as the Sega NAOMI or Triforce) or gaming PC components. (Such as the Taito Type X) Arcade games frequently have more immersive and realistic game controls than either PC or console games, including specialized ambiance or control accessories: fully enclosed dynamic cabinets with force feedback controls, dedicated lightguns, rear-projection displays, reproductions of automobile or airplane cockpits, motorcycle or horse-shaped controllers, or highly dedicated controllers such as dancing mats and fishing rods. These accessories are usually what set modern video games apart from other games, as they are usually too bulky, expensive, and specialized to be used with typical home PCs and consoles. Currently with the advent of Virtual reality, arcade makers have begun to experiment with Virtual reality technology. Arcades have also progressed from using coins as credits to operate machines to smart cards that hold the virtual currency of credits.