I came across the picture below (http://comics.likeyou.me/he-has-wifi/1586/).
Despite the fact this is a comic, I'm wondering if the word "WiFi" is being used correctly here. Shouldn't it be "wireless" rather than "WiFi"?
I have done some searches before asking, with this results (Merriam Webster):
WiFi: used to certify the interoperability of wireless computer networking devices.
wireless: having no wire or wires.
Has "WiFi" become synonym of "wireless" in some informal contexts?