Watch Jessie Carabajal demonstrate how WiFi is effected by other devices in the 2.4GHz, particularly your microwave. Keep this in mind if you put your repeater or mesh device in your kitchen.
I get a lot of questions about the safety of connecting to public WiFi. First, to answer that: It isn't safe. Always use a VPN. My current favorite is NordVPN. But did you know that your phone constantly probes WiFi and Bluetooth devices and shares unique and UNENCRYPTED information with each?...