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Passport-less clearance fully available at Changi Airport, average clearance time of 10 seconds: ICA
(www.straitstimes.com)
This is a most excellent place for technology news and articles.
But it is the same if you have a regular (non-anonymous) social media account.
Social media is a privacy concern as well, but this is clearly on another level. I don't save my biometric data on twitter. I don't need facebook to live a full life. And as you said, there are anonymous alternatives. There aren't when you travel. And living without travelling at least a little bit is kind of sad. So the comparison doesn't fit.
No. It is just other people who are using your data.
You seem to have no idea what everybody is doing with all the data that you have posted.
If you think Musk has your fingerprints because you tweeted about the last restaurant you ate, we clearly have no common sense of reality and should leave the discussion at that