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Trackpad and Trackpoint stick
ThinkPads are famous for the red Trackpoint stick and the T431s has one embedded in the keyboard. The expected three buttons to use with the Trackpoint are missing as the trackpad steps in to fill those functions (detailed on next slide).
The oversized trackpad has a glass surface making it very easy to slide the finger to control the cursor. The trackpad can be used for gesture control of Windows 8.
There is a small fingerprint reader on the lower right of the keyboard for user authentication.
The glass trackpad is very large for a laptop and includes a unique array of 5 mouse buttons. The top of the trackpad closest to the keyboard with the red trackpoint stick, has 3 buttons built into the trackpad. These function as the left, middle, and right buttons for the trackpoint and are indicated by thin red lines on the trackpad. The bottom of the trackpad has clickable integrated buttons for left and right mouse buttons while using the trackpad.
The trackpad senses multiple touch at the same time and it is possible to perform gestures to control various functions of Windows 8.