9. An article comprising: a computer-readable storage medium that contains instructions, which when executed by one or more processors result in performing operations comprising: sensing a contact patch on a touchscreen of a handheld electronic device; determining a centroid for a contact patch for the touch; and determining an active point for the contact patch.
9. An article comprising: a computer-readable storage medium that contains instructions, which when executed by one or more processors result in performing operations comprising: sensing a contact patch on a touchscreen of a handheld electronic device; determining a centroid for a contact patch for the touch; and determining an active point for the contact patch. 11. The article of claim 9 , wherein the operation of adjusting is performed during an initial calibration procedure for the keyboard.