Adult

OhRoma is the latest attempt to integrate smells into entertainment and like many new innovations, it's coming from the porn industry. The device is basically a fancy gas mask that can pair with a user's smartphone to trigger the release of specific odor canisters.

California startup Sinful Robot is working on the first generation of "highly-immersive, adult virtual reality experiences" for forthcoming Oculus Rift.

Michael Ford, who restores old arcade games, has built a peep show machine from scratch using modern technology.

The adult industry has scrambled to take advantage of the new iPhone 4's ability to make face-to-face - or face-to-other-bits videocalls.