Explanation please: Cast To Device

I have never used Cast To Device but this morning I planned to use it. If I hit a jpg file, and right click - go look at "cast to device" please tell me why I am seeing my own TV - which is a good thing but I also see the lady upstairs both of her Roku devices. How can my computer see her devices? She certainly is not using my network and I do have things password protected.

My thinking is that the cast to device should only see what it can connect to??

thanks

LadyDee said:

I have never used Cast To Device but this morning I planned to use it. If I hit a jpg file, and right click - go look at "cast to device" please tell me why I am seeing my own TV - which is a good thing but I also see the lady upstairs both of her Roku devices. How can my computer see her devices? She certainly is not using my network and I do have things password protected.

My thinking is that the cast to device should only see what it can connect to??

thanks

Check Settings/System/Shared experiences/Nearby sharing/My devices only...

Thankyou Edwin !! Super simple, just never used it before. Makes sense to me now.