Android PowerPoint Presentation Remote App
Here is an app that can make your Android smartphone work as a PowerPoint remote!. This app works over Bluetooth and WiFi to control the slide show in the presentation loaded Notebook or PC.
Apart from Microsoft PowerPoint, It can work well with OpenOffice and Adobe Reader also.
In order to make this app work, you have to install a server component on your presentation machine.
You may install this remote app for free from Play store.