Computing interface systems and methods are disclosed. Some implementations include a first accelerometer attached to a first fastening article that is capable of holding the first accelerometer in place on a portion of a thumb of a user. Some implementations may also include a second accelerometer attached to a second fastening article that is capable of holding the second accelerometer in place on a portion of a wrist of a user. Some implementations may additionally or alternatively include magnetometers and/or gyroscopes attached to the first and second fastening articles. Some implementations may also include a processing device configured to receive measurements from the accelerometers, magnetometers, and/or gyroscopes and identify, based on the measurements, symbols associated with motions of a user's hand and/or the orientation of the hand. Some implementations may allow a user to control a cursor in a three dimensional virtual space and interact with objects in that space.