What About Line of Sight?
There are two main types of remote controls: IR (infra-red) and RF (radio frequency). IR remotes require "line of sight." They need to be pointed directly at the device they control without physical obstruction. RF remotes use a signal that can penetrate walls, furniture and nearly any physical object placed between the device and remote.
Going beyond IR and even RF, newer streaming devices are enabling communication between remotes and devices using Wi-Fi Direct (Roku) and Bluetooth (Apple TV and Amazon Fire TV) circumventing the need for line of sight all together.
The main point here is if you've purchased your streaming device in the past couple years, chances are line of sight won't be an issue.
If the time has come to upgrade your streaming device, or you're thinking about adding a second device into the mix, check out our cord cutter's guide to streaming media.