I know I like gadgets a lot so when i see a gadget that is worth sharing I will post an item about it. The Mele F10 is an air mouse that is cross-paltform and enables access to tv, a computer, an android tv system . Very flexible and allows you to control a presentation, watch a movie , slideshow. You don’t have to point the device at the presentation to control it if its a linear presentation. Flip it over and you have a full keyboard to add more information from your audience or alter a presentation on the hoof. For accuracy on a small screen I did need to hold the device with both hands to keep it steady! Cost £18.99 from Amazon UK find it at :-