中等ICT-SOCI-006
A lunch poll only needs a class and a menu choice. Which collection is excessive?
A. The class.
B. The menu choice.
C. The student's Hong Kong identity-card number.✓ 答案
D. Nothing, because more data is always better.
解說
Personal data should be limited to what the purpose needs. An identity-card number identifies the student far beyond a lunch choice, so it should not be collected "just in case".