Because your date of birth is easy to find in public records,  it’s best to avoid using it in passwords and PINs. People who  know your birthday could also very easily guess your PIN.
因为您的出生日期很容易在公共记录中找到，所以最好避免在密码和 PIN 码中使用。否则知道您生日的人也很容易就猜到您的 PIN 码。