YSK that for over 50% of the United States population, the combination of someone's 5-digit zip code, gender, and date of birth is unique to only one person. Be careful with the information you share online-- it's more identifiable than you think.
from /r/YouShouldKnow
YSK说，对于超过50%的美国人口来说，一个人的5位邮政编码、性别和出生日期的组合只有一个人是独一无二的。小心处理你在网上分享的信息--它比你想象的更容易被识别。