There's nothing like announcing, "I'm poor!" every time you line up for lunch in the school cafeteria. But the use of a retinal scanning program will help students avoid the indignity by making the school "cashless." A similar system is in place to track borrowers at the school library. Yes, there are some applications in online learning, but it will still be necessary to ensure that the person completing the work is the person who's eyes are being scanned.
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