One time, we had remotes for televisions. We hated having to point them to get line of sight.
Did you know that some of the older Gameboys had this? I think it was the Gameboy color. Instead of a link cable, you'd just point two Gameboys at each other, and.... Well, they had to be on a level surface like a table. And also you basically couldn't ever move them or touch them, which was strange for a handheld. ...annnnd it basically didn't work. Ever. So Wi-Fi was pretty good!
But no, let's go and use line of sight tech, that seems like a great idea!
I kid, I kid. I'm sure it works fine enough within its limitations for a certain purpose, I just can't help but joke about making these connections.