Haptic technology in general not harmful to the human body and can be focused easily. One company called Ultrahaptics has been working with this technology to provide non-contact haptic feedback. Founded in 2013, Ultrahaptics has focused on providing users haptic feedback in free space using ultrasound technology. They use multiple ultrasound speakers to make changes in the air pressure around the user. This provides the ability to feel the pockets of pressurized air focused in the environment. This gives the user tactile cues for gestures, invisible interfaces, textures, and virtual objects. The company is continuing to grow and launched their evaluation programme
Haptic suit Developer SDK is currently available for developers to create their own "haptic animations". NullSpace VR ran a successful kickstarter in March 2017. This project went backrupt in September 2018: https://www.kickstarter.com/projects/morgansinko/hardlight-vr-suit-dont-just-play-the-game-feel-it/posts/2292833 AxonVR, now HaptX, is developing a full body haptic feedback suit based on miniature hydraulic actuators bHaptics released three products which are a vest based on 40 haptic points, a haptic mask, and a haptic arm band with 20 haptic points. Woojer is developing a haptic vest with a three-fold patented transducer, the Osci. The technology is scalable, so it can be woven inside a smart fabric as well as