Am using it with Samsung 50HU8550 Smart TV. Right click on Mouse pad brings Tools where you can select Smart Hub, Search, Input Source, OnScreen remote, Power Off. Once you select Smart hub then you can select app using arrow keys and hit enter to open the application.
I agree, The keyboard can't be used inside apps (YouTube, Netflix) to type. I use Search option to search videos which lists videos of YouTube, etc.
It's the App which decides whether it accept keyboard input or not. So Application developers only include the feature. There won't be any software on TV can enable typing inside apps.
Let me know If you figured any workaround.
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