method One: Translate ppt into Flash file
I personally think this method is relatively good, because this method can retain animation. You can use ispring to convert PowerPoint to flash files.
Method Two: Convert PPT to video format
This method is also better, there are currently a variety of software can provide this function of cutting video, such as: CamStudio, Jing. Or you can also directly install the PPT2010 version of the software, using the Save as WMV format, you can translate the PPT into a video Oh, using this method you can also upload a ppt to Youku, such as a series of video sites Oh.
Method Three: Translate ppt into PDF file
This method is the most commonly used method, but also a more convenient way. There are a lot of software that translates into PDF files, such as Adobe Acrobat Pro, PDF995, online PDF conversion tools, and more.
Method Four: Encrypt on the ppt file
This method may be more sturdy, the reason is called tough, because it is almost deprived of the power of others browsing, hehe, only you personally authorized people to browse, in PowerPoint2007 above version, you can choose "office-preparation-encryption document" to achieve encryption work.
Method Five: Add a digital signature to the PPT file
This method is more interesting, you can test it in office 2007, almost the same as the original file, but can not be modified. But, really want to revise, also can, this I will not say. In Powerpoint2007, you can choose "office-ready-Add digital signatures" to achieve confidentiality.
OK, let's choose a secret way you like.