"that the most important information from any location comes from the number of frowny presses, which not even a dishonest employee would be able to undo." So

"that the most important information from any location comes from the number of frowny presses, which not even a dishonest employee would be able to undo." So possibly pressing the happy face doesn't compensate. The article also mentions that there's a reset delay to prevent people from pressing buttons repeatedly.