Marmalade helped Bill to skip school with impunity. How did he do it?
Australian schools began using fingerprint scanners to check high school students’ attendance in 2010. Bill found out that he could easily bypass these scanners with gelatin, which is used to make marmalade bears.
He put his finger to a marmalade bear and asked a classmate to show it to the scanner for him, so that the school system would think that Bill was present in class. The scanner successfully recognized the fingerprint.