Mayhem of the Black Underclass: Uh, maybe I'm stupid or something, but if you're etching a barcode into something, why not use the barcode as a barcode? Why force your user to buy a mic, hook it to the computer, ensure that the software is running, shush the class, run your finger over the camera/advance widget, and then continue the lesson? Why not just use a smart phone with a QR reader?
Farkenhostile: So it's like a record player which has been around for like 130+ years
SteakMan: Yeah, I'll file this under brilliant idea that has no use in the real world.
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