Just a quick and very cool trick.
If you have a Synology NAS and you're conscious about power protection, it's very likely that you have an UPS connected to it. And this is great. But what about other machines?
WARNING: not suitable for childrens.
If you need to stream your screen to an audience of many users, VLC is right for you!
This is a simple hack for when you're AFK. Gives you pictures of who's trying to login into your PC.