Card reader glockenspiel


brockenspiel

Brock used an arduino to generate glockenspiel sequences from a magnetic stripe reader. The casual video demo (with some charming text corrections) demonstrates how Arduino can make physical projects much more approachable for newcomers. - Brockenspiel [via]


Related:
Diy Doorbell Crop
DIY doorbell(s)

From the pages of MAKE:
Magstripe Article
MAKE:01 p.108 Magnetic stripe reader - subscribers, read this article now in your digital edition


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Comments

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Posted by: Peter on April 11, 2008 at 1:21 PM

Card

Isn't he worried about people stealing his credit card number based on the sound frequency? I would assume not because he doesn't appear to be worried, but shouldn't he be?


Posted by: thesamurai1200 on April 12, 2008 at 4:47 PM

yup, all you gotta do is record the sound, and you have the number. there is some variability because 9's and 0's are represented as silence.

i mean, there's still that 3-digit security code on the back, so it shouldnt be too much of a worry.


Posted by: Mahto on April 14, 2008 at 11:35 PM

You could also run the data through some sort of one-way hashing function, which would still provide a unique signature for each card, but would make it hard to map the sounds back to numbers :-)


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