[threeseed]

What harm does spying on my neighbour through her window cause ?

If light travels through my telescope into my house I'm not allowed to watch it ?

Seriously just because something is "in your house" does not mean you some inherent right to it.

[Tinyyy]

I'm not in the US and I don't know much about US laws, so can you enlighten me on the relevant laws regarding this? Would it be illegal to stick a 4k camera on your window sill? What about for surveillance purposes?