This phrase was used of an appliance that connected to an electrical outlet; now it's an add-on for a browser
[DOC] [TLE] Amazon.com: Customer Reviews: TP-Link Smart Plug w/ Energy ... [PAR] So now I have a WiFi plug that 95% of the time I want to use, I have to walk to and 
.... my Echo, it's remote, and now the Dot I have voice control throughout most of 
my .... using a local web browser connection to the camera's built-in web server.