This App needs a Windows Software installed on a Windows Computer having PowerPoint installed. Download and install FonPrompt4PPT from http://www.fonprompt.de/pro/
After Starting FonPrompt4PPT(.exe), select the Presentation and PowerPoint will start the Slideshow. A first Slide with a QR Code will appear.
Start the FonPrompt Android App. Touch the "Start Pairing" Button and scan the QR Code using the FonPrompt App.
After Pairing your Phone with the Presentation, the Titles of the Slides are shown in a List. Page through your Presentation with Phone Volume Control or touch the Slide Titles on the Phone Screen.
This Software uses Code from the ZXing (Zebra Crossing) Project. ZXing is a great QR Code Library, published under the Apache 2.0 License.
ZXing Website: http://code.google.com/p/zxing/
Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
Microsoft, Windows, Office and PowerPoint are Products from Microsoft Corporation.