A method of doing business is disclosed that transforms a biometric used by a user in a transaction. According to the present invention, the computing apparatus executes a developer application, and tests a user application in the media playback apparatus which is connected to the computer apparatus through a network. The cover includes a center section interposed between first and second side sections. The finger is flexed outwards for insertion of the axle within the axle receiving bore, and flexed inwards to insert the detent into a notch of the axle once the axle is inserted in the axle receiving bore. If the spoken utterance does not include the second level of the multi-level command format, the computing device waits for a predetermined period of time and provides at least one of an audible or visual action prompt if the second level is not received within the predetermined period of time. The updater calculates a position of the control point from a moving amount of the operation point and updates the approximate contour.