PDFML solution is purely HTML-based, the fill-in forms can be accessed by any browser (i.e., Firefox, I.E., Safari, Chrome, Opera, etc.) and any hand-held device (i.e., iPhone, iPad, Android, Kindle, Nook, etc.). PDFML is a true zero-footprint solution unlike other products that require additional software, proprietary readers or viewer to be installed like the most current Acrobat reader for instance.