I want the ability to insert a barcode into a PDF

I can create the barcode I need based on custom data.  I need to give people the ability to insert that barcode onto an existing PDF.  It needs to be easy and inexpensive.  I have looked at some of the free/cheap PDF software and I can merge two docs, but I would prefer to post the barcode into the PDF.  Any ideas?
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I am assuming you have a barcode font like 3of9, 4state or QR?
leewallinAuthor Commented:
I downloaded a barcode font from dafont.com, and it appears to work well
Joe Winograd, Fellow&MVEDeveloperCommented:
If the barcode is in a font, then you need a PDF reader that allows you to insert a text annotation, such as Foxit Reader (excellent and free!):

If the barcode is in an image, then you need a PDF reader that allows you to insert an image into the PDF. Foxit Reader also does this. Regards, Joe
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Joe Winograd, Fellow&MVEDeveloperCommented:
To follow up on my comment about Foxit Reader, here's a screen shot showing how you would do it:

Regards, Joe

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leewallinAuthor Commented:
This is exactly wanted, and free.  Thank you. PS: Sorry for the delayed response. Live in northern NJ and no power for a few days.
Joe Winograd, Fellow&MVEDeveloperCommented:
I saw what you folks went through on the news. Makes sense for December but not October. Hope that all is well now. Regards, Joe
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