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 memory a five-minute delay. Studies by Millar on congenitally blind and blindfolded children have revealed the importance of movement and body-centered cues in haptic memory. While these cues are important in all individuals, blind children tend to rely on them heavily. Furthermore, it is proven that our haptic cues and memory affects our visual experience and the two experiences are linked for us to comprehend our surroundings. Implicit memory can be referred to as the unconscious recollection of previously presented information. This type of memory influences one's actions and behaviors without the individual having any awareness of its availability for explicit