This made me think... Why don't you trust the "PFK" as you call them? Because he can write down the numbers which are on your card? Why do we even need numbers on the card anymore? They're embossed as they used to run the card through the contraption with the carbon copy paper. But how many places do that anymore? Does the number really need to be ON the card? It's on the magnetic strip, which the machine reads. It never needs to be displayed. Sure, it's security through obscurity, but it is better than the current system.
Better not send this comment as an Anonymous Coward. I want credit (pun intended) when someone implements this idea.
As this book interested me, I went to check it out on Amazon. Seems the author has another book called "Intermediate Robot Building" as well, in case you want to go to the next step.
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Never said the number wasn't needed somewhere. I just said there's no reason for it to be visible on the card itself.
Agreed, although it hasn't happened to me in years.
This made me think... Why don't you trust the "PFK" as you call them? Because he can write down the numbers which are on your card? Why do we even need numbers on the card anymore? They're embossed as they used to run the card through the contraption with the carbon copy paper. But how many places do that anymore? Does the number really need to be ON the card? It's on the magnetic strip, which the machine reads. It never needs to be displayed. Sure, it's security through obscurity, but it is better than the current system.
Better not send this comment as an Anonymous Coward. I want credit (pun intended) when someone implements this idea.
As this book interested me, I went to check it out on Amazon. Seems the author has another book called "Intermediate Robot Building" as well, in case you want to go to the next step.