At some point in your life you've probably been asked to take out a #2 pencil and fill in a series of numbered ovals. This method for gathering standardized data is widely used in elections, tests, and surveys, and it's generally considered to be anonymous: if you don't put your name at the top, you don't expect your answers can be traced back to you.
New research from Princeton University calls that assumption into question. A team led by computer science professor (and current Chief Technologist of the Federal Trade Commission) Ed Felten has demonstrated software techniques for re-identification of respondents using only images of their filled-in bubbles. Their technology has both benign uses—detecting cheating in standardized tests—and malicious ones like undermining the secret ballot.
Read the comments on this post
ORACLE POWERCHIP SEMICONDUCTOR PRICELINECOM QIMONDA QUALCOMM
No comments:
Post a Comment