* Serial port conflict
If a stylus or eraser does not work at all, you may have a serial port conflict on your PC. Please see  Q3 How do I fix a serial port conflict?  for more information. 

* Damaged stylus set or eraser
Try another stylus or the eraser. If it works correctly, the original stylus set or eraser may be damaged. See the PoinTech web site for information on replacing broken hardware.

* The PoinTech's sensors blocked
Make sure you do not place your hand or arm between the stylus set (eraser) and the PoinTech's sensors. If you block the PoinTech's sensors, it cannot sense where you move your stylus set or eraser.

* Orientation
For a stylus, make sure the clear cover of the stylus set is pointing up. If it is pointing to the left or right, you may not be sending stroke information consistently as you draw on your whiteboard. For the eraser, make sure the eraser pad is flat against the whiteboard. It is possible to erase with the edge of the eraser and not send information to the PoinTech's sensors if the eraser pad is not flat against the whiteboard.

* Pressure
Try pressing slightly harder with the stylus set or eraser. It is possible to draw or erase lightly enough that no signal is sent to the PoinTech's sensors.

* Low battery
If the battery in the stylus set or eraser runs very low, there may not be enough power to trigger the Low Battery warning in the PoinTech application. Try inserting a new battery into your stylus set or eraser.

* Unfriendly environments
There may be intermittent or low level infrared or ultrasound interference in your work area. Use the Attach PoinTech Settings dialog box to test your work area. It may be necessary to move PoinTech to another area or locate, and turn off the source of the intermittent interference. Sources of interference include security systems that use active infrared sensors. See the PoinTech web site for more information.

* PoinTech in direct sunlight
Sunlight can flood the PoinTech's infrared sensors, causing failure or erratic behavior when you try to use the PoinTech application and ActiveMouse. Close the window shades and keep sunlight off of PoinTech and your working surface.

* Drawing in non-recordable areas
A 3.9" (10cm) band on the left edge of the board is a margin, where no manipulation could be done. Drawing in the shaded area as shown may degrade the performance. 

  

* Pressing both eraser pads while erasing
If you use the narrow eraser pad, but hold the eraser so that you are also pressing the wide eraser pad, both eraser surfaces may send signals to PoinTech's sensors. This causes the sensors to lose track of the eraser strokes. Do not grip the eraser pad that is not against the whiteboard.