Possibly. You can send information through power lines for example. There are consumer devices that use it for like local internet connections, and I think power companies have started using something like it to replace meter readers.
There are multiple ways to transmit radio frequencies through computer monitors (e.g. this), and communication via ultrasonic sound which we can't hear.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
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