Looking at Google Play, you can find countless apps to enable you to wirelessly transmit your content to a projector. While apps like AirParrot look rather convenient and inexpensive, there are a few limitations you need to know about.
First – you have to buy extra hardware, such as a Chromecast adapter, or an Apple TV. You then purchase a license for the software – and everyone who wants to use the device is required everyone to download and register the software. Secondly, there are content limitations since most of these don’t support HDCP content, and some have other limitations such as the inability to show YouTube videos. So while the pricing is attractive, you may be giving up functionality that can be important in a classroom or business meeting.