WiFi, Bluetooth, infrared — why does a TV remote need to point, but your phone doesn't?
Closing your bedroom door: the TV remote suddenly stops working but your phone music and earbuds keep playing right through the door — same closed door, three different fates.
Talk about it
- Before we close the bedroom door, guess: which keeps working — the TV remote, the WiFi, or the earbuds?
- Infrared is light you can't see. What else around the house might be using invisible light?
- Why do you think the remote has to point but your phone doesn't?