How can I use the "signature" function in Preview on Mac Mini with no camera? I have a Mac Mini with no attached camera. I would like to use the feature of Preview that allows you to insert a signature. This relies on taking an image of your signature using an isight/facetime/webcam. I do not have on.

I do have a MacBook pro on which I use the signature function. Is there a way to copy a file from the the MacBook Pro to the Mac Mini to enable this function on the Mini?
You apparently can transfer the signature from your Macbook to your Mac Mini. This webpage explains the process:

http://www.stuartcarnie.com/2011/08/transferring-preview-app-signatures-in.html

Hope it helps! If you run into any problems feel free to ask.