Abstract: Most of the previous 3 DOF (Degree Of Freedom) 3D touch positioning techniques require more than one finger (usually two hands) to be performed, which limits their using space on small mobile devices such as phones and tablets that need one hand to be held in most occasions. Given that the pressure sensitive touch screen would become ubiquitous in near future, we present the pressure-based 3DOF 3D objects positioning and manipulating techniques that only use one hand in operating.