While I now make a practice of NEVER using public wifi sites, I use my phone as wireless hotspot for my computer PLUS a VPN (PureVPN).
If you use a VPN anyway whether you use McDonalds or other free wifi or your own phone - the site you are connecting to is UNKNOWN to the host. Plus no nefarious hackers camping out at free wifi spots can collect your data on the free (and usually unencrypted) public wifi.
Ted
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RDSS - Racing Decision Support System™
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