Sex machines have been around for a long time, but they seem to be making a comeback. The trend started in the 1970s with sex machines, but it has recently become a new "trend" again, especially with the popularity of the film "Fifty Shades of Grey." This is due to the fact that sex machines are being marketed as being a safe and healthy alternative to actual sex. Sex machines use a variety of different technologies and can be used in many different ways. They can be programmed to provide different sensations, such as vibration, pulsation, and rotation. There are even machines that can simulate oral sex. Many people also find these machines to be more enjoyable than traditional intercourse because there is no contact with your partner.