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Android won't kill sideloading after all, but new verification rules will make it harder
(www.techspot.com)
This is a most excellent place for technology news and articles.
Fair, it's not a new term. I was born in the 80'ies, I'm familiar with the concept.
However, it's now being used with new bullshit meaning (i.e. going outside the Google/Apple app and their own offered selection), and media are normalizing this use.