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My email is whatever shit protonpass comes up with when I generate a random alias. Phone number is 3334445566 Name is: lol no Gender is undisclosed DoB is January 1st of the first year I can select. Otherwise, 1900 And income is 1.
There, free WiFi.
That said...A wifi access point that requests that info is almost certainly not private for every other trackable thing you do with that wifi, however.
It's good practice to assume that this is true of every network you don't control.
If it's an open WiFi (no WPA password) packets are not encrypted anyway, so anyone on this AP can easily see everything that comes through it. A decade ago, when most websites allowed plain HTTP, there was a Firefox extension which let you hijack the Facebook or Twitter session of anyone connected to an open WiFi with a couple of clicks.
Nowadays everything is hopefully encrypted at the application level, so while attackers can see where the data goes, they can't actually read it.
Everything you do on a public WiFi should be through a VPN anyway. Just in case you accidentally forget you are on it and log in somewhere.
I usually use:
Email - nope@nah.com
Name - Nah Nope
Gender - prefer not to say
DoB - same as you
Phone - just random digits, or if I'm feeling spicy the phone number of a guy I used to be buddies with who fucked me over
Income - never been asked for this yet, probably go with something outlandish....like 1Personally I like giving my personal data as Pope Francis.