Re:Reasons blog posts can be of higher scientific quality th...
by user5994461 on Monday April 17, 2017 @02:57PM
(#14133453)
full name + date of birth + place of birth.
That leaves about 500 non unique individuals in a country of > 50 million inhabitants.
In many other cases, as pointed out, it's just not possible. I'm studying mobility patterns through cellphone metadata. Even if you strip out the actual phone number with a random ID you still know where a person is going, and thus re-identify them if you have other public data.
[1] https://en.wikipedia.org/wiki/Latanya_Sweeney