If you are in the high tech sector you face the challenge of demonstrating your product in an investor or sales pitch meeting. If that meeting is short (an hour or less), my advice is not to show your product in a live demo, but use a series of carefully planned screen shots.
Murphy’s law says that whatever can go wrong, will go wrong. And it seems to apply especially to high tech demos. There are just so many variables that can go wrong: Internet connection, screens, the application itself.
If you are in the middle of a short pitch, any interruption will pop the momentum of your story. Ideally you want your pitch to be one focused burst of energy that gets the audience craving for more at the end. A hiccup because of WiFi password will definitely not get you there.
There is another problem with demos, not all application functionality is Interesting. Logging in, creating profiles, entering some data, all things you have to do, but they are not the piece of technology that will wow your investors or customers. And finally, a live computer screen is most of the time not readable when put on an overhead projector, most fonts are probably smaller than 12 points.
So, what to do instead. Prepare an interesting story, set it up beforehand in your application, take lots of screenshots and paste them in the right order in your presentation. Zoom in to those aspects of the screen that are interesting, crop out those window bars, ads, anything that you do not need. Circle what people,should be looking at. Put big bold explanation text boxes on the slides.