I do caution the family not to share ‘encoded’ data, like those QR codes. Never know what’s in them, and related, the back of my driver license now has two or three bar codes and 2D codes as well as a big fat mag stripe and I have no idea what data are in them. Kinda pisses me off when clerks ask for my ID then immediately swipe it in a mag stripe reader or bar code scanner. When they ask, I show it to them, but maintain a tight grip so they can’t just swipe it out of my hand.
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