@Juliehallmark
You can't.
However your Sky Hub should be able to display a list of devices which are using it.
If you've either deliberately or inadvertently given away the wireless security key and you live in close proximity to other people, this may be quite a lot.
* * * * * * *
Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
