| x | The x-coordinate of the touched position (in client coordinates). |
| y | The y-coordinate of the touched position (in client coordinates). |
| cx | The horizontal pixel count of the finger contact area. Always 1 if the device does not support this. |
| cy | The vertical pixel count of the finger contact area. Always 1 if the device does not support this. |
| id | Touch ID. During multi-touch, a unique value is set for each position, allowing identification of the position by this ID. |