Using pointers, be they the traditional aerial type or laser pointers, rarely adds value to a presentation. More often than not, they give a presenter something to play with which irritates the audience.
In my experience, it is best not to use them.
If you feel that you need to point to different parts of your visual aids to convey your message, you will probably be better off redesigning your visual aids so that they are clear enough to convey the message without using a pointer.
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Posted by Graham Young 
Graham Young
A to Z of Business Presentations 