Why is my touch location misaligned with the projected image?

This indicates that the coordinates are uncalibrated (offset error). It typically happens after the projector is moved, the computer resolution changes, or the display aspect ratio shifts (e.g., from 4:3 to 16:9).

Solution:

If you are using an external PC, go to the Windows Control Panel, open Tablet PC Settings, and click Calibrate.
For best results, run our dedicated whiteboard calibration utility provided with the product. Tap the 4, 9, or 16 crosshairs that appear on the screen sequentially with your pen tip to align the touch grid perfectly with the display.