How To Block SomeOne From Using My Digisol WiFi Router

Change the access-key/password – and change any vowels to say accepted other characters. Use a zero for a letter O; use an exclamation mark for number 1 – and so on?

Hide the router’s SSID (the name it broadcasts to the world) – but make sure “you” know what it is… as you will need to manually enter it in order to connect an y time there is need to do so (as in reconnect). Alternatively change it – but best is to hide it whatever it is.

Even better besides the above…

Use mac filtering – a list you create which restricts access to only those mac addresses in that list. This is done within the security settings for your router’s wifi setup.