Then everybody with a QR-code reader can get your info. Online database access can at least in theory be restricted to authorized people.
Couldn't the information the QR-code holds be encrypted with a private key?
When American population just sits at home watching TV or playing video games, Europeans and especially Dutch tend to spend time together. Sit at cafes getting high, eat at a restaurant and have some fine wine, and socialize with people. The same is true for Asians and Australians too. And the American people introvert culture isn't a new thing that came with computers - they did this before geeks too. Sitting in front of TV watching mindless shows and eating TV dinners, alone
Sounds beautiful, no really. But I live in the Netherlands and you have no idea how wrong you are. For the past 30 years (at least), the Netherlands has been "individualizing" at an alarming rate.
"Whoever undertakes to set himself up as a judge of Truth and Knowledge is shipwrecked by the laughter of the gods." -- Albert Einstein