relay.firefox.com

Brilliant service and add a VON om top it will make it no sweat.

Have you tried using any email? Literal example:

it@walmart.com

Somw setups don't validate much

Many people here suggesting a throwaway email and/or VPN. While this does migitate the impact somewhat, the only proper response is to not use their "service" and deactivate the WiFi fo your phone (else they might be tracking your MAC address).

Not only were they already collecting that information, they likely are collecting information about your position in the store from wifi positioning.

Yeah, you can pretty much assume that any random Wi-Fi asking for that information is already doing that. My local mall has one that will accept any old email but it certainly looks like this one wants you to create an actual Walmart account.

Imo, this is part of the problem with lack of privacy in today's world.

People will accept this more than not, without a second thought. This leads to the taking of a little bit more until one day you are left wondering where your privacy went.

Again, this is just my humble opinion.

From personal experience I've found that an OpenVPN connection routed over port 53 (same as DNS) bypasses their signin screen entirely.

Of course it's been months since I last tried since I rarely go into the store and don't have reception issues when I do. Could be they've patched it since. Still worth a shot.

Have you tried using Tor? Sometimes it works.

Why can't you use cell service?

In my experience you can type any vaguely email-like string there.

Agshfjfbsksns@jfjfdjjs.uej

Or something.

quick vpn over tor and firewall https://f-droid.org/en/packages/pan.alexander.tordnscrypt.stable/

Well that's just plain invasive. I'll make sure to take myself off of their network next time I'm there.

Temp-mail.org

Junk email + VPN, but I've found that most free wifi services like this explicitly try to inhibit the functionality of mobile VPN clients.