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Preview Signature Capture Not Working

Having no luck getting the signature capture to work in Preview. I go through the appropriate steps, hold up my signature to the iSight camera, get a perfectly wonderful looking capture, click Accept, go back into my document, click on the icon and it acts is if no signature has been captured. Go to manage signatures and none are there. Even better, it keeps the indicator light on my iSight camera from turning off - even when I close out of Preview. Only solution I've found for getting the indicator light to quit is to restart the computer ( i5 MacBook Air). Have tried several different PDFs and all the same result.


Any thoughts? Running lates version of Lion (10.7.1). Obviously not the end of the world, but would definitely come in handy. Thanks.

MacBook Air, Mac OS X (10.7.1)

Posted on Aug 27, 2011 6:15 PM

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39 replies

Feb 5, 2013 12:37 AM in response to D Jefferson Reeder

Did you look under /Library or ~/Library? These are user preferences, not system wide preferences, and the user library folder has been made hidden since OS X 10.7. Be sure to locate the appropriate user preferences by navigating to the user library folder (hold down option key when using "Go" menu in the finder and the user library folder will became an available option to go to).

Feb 21, 2013 10:21 AM in response to sholla

It took me ages to work out why my signature was not being captured. I phoned Apple support and told them that I was going through all the correct steps I needed to but that the signature was simply not being captured.


Through trial and error I eventually worked out that my problem was related to the strength of the whiteness of the paper I was using. Whilst I was writing my signature in a thick black pen on a slightly off white piece of paper (the ordinary sort of paper you get when you buy an ordinary writing pad), it simply would not work until I used my printer paper which was much thicker and as a result a much stronger white. As soon as I used this paper it worked straight away!


I hope that all you others who have struggled with getting your image captured can solve it by testing different pieces of paper you place you signature on. I would also suggest using different pens if that does not work. I used a black Sharpie.

Nov 18, 2013 2:35 PM in response to sholla

Hey guys, everything posted here didn't work for me, but I found a solution, similar to what Fylos described. I took a good paper, folded it in 4, signed VERY CLEARLY on it, held it to the camera, and had to shine a flash light on it to increase the luminosity/contrast. I used my iPhone's flash light.


Tip: if you don't see a preview of your signature in the box, the Accept button will just close the window without doing anything.

Preview Signature Capture Not Working

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