In this mode, the Tecla Shield works in combination with the Mouse Keys built-in accessibility feature of Mac computers that allows a user to control the mouse pointer using keystrokes.
When operating in MouseKeys mode, the Tecla Shield DOS supplies the keystrokes needed to move the mouse pointer in response to switches connected to the wheelchair port and the switch port as described in the table below. You will need a four-direction joystick (such as a hand-operated wheelchair joystick connected through an ECU port) or 4 switches connected through the Multiple Switch Adapter to use this mode effectively. To click you can use a switch connected to switch port 1 or use dwell software like KeyStrokes or DwellClick.
With the Tecla Shield ready for connection, the status indicator light should be blinking a very light blue or “aqua” colour. If you are not sure how to change modes check here: Mode Change Instructions
1. Pair and connect the Tecla Shield DOS with your computer.
Go to Apple menu > System Preferences > Bluetooth. With Bluetooth enabled, you should see the Tecla Shield DOS listed under Devices as TeclaShieldDOS-XXXX (where XXXX is a random sequence). Click on Pair.It will change status to Connected.
2. Set-up Mouse Keys.
a. Go to System Preferences > Accessibility, then scroll down and click on Mouse & Trackpad to go to its settings.
b. Click on Enable Mouse Keys to activate Mouse Keys.
3. Once Mouse Keys is active, the Tecla Shield switch inputs will perform the following actions:
| SWITCH INPUT | ACTION | |
| ECU 1 (Forward) | Moves Pointer up | |
| ECU 2 (Back) | Moves Pointer Down | |
| ECU 3 (Left) | Moves Pointer Left | |
| ECU 4 (Right) | Moves Pointer Right | |
| SP 1 | Press | Mouse Click |
| Press and hold 1x* | Drag Lock | |
| Press and hold 5x* | MouseKeys on/off (Mac only) | |
| SP 2 | Mouse Double Click |
*x is the hold time set using the + and – buttons when connected in this mode
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