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SENSORS / READERS/SCANNERS
Magstripe Reader - PS/2 Interface - 2
Tracks (1&2)
PRODUCT ID: 854
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DESCRIPTION
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Decode what's hidden on your credit cards, or use it for an access system - this
mag-stripe card reader can decode the two most common tracks used, #1 and #2!
We like this small and easy to use mag-stripe reader for being so microcontrollerfriendly. Instead of a USB port, it has a PS/2 interface and acts like a 'keyboard'. In
fact, its designed to be a 'pass through'/'keyboard wedge' device for point-of-sale
terminals. What's nice about PS/2 is that it uses a single connector for power and
data, and uses two data pins. When a card is swiped, the raw data is decoded,
parity-checked and spit out as if they were typed on a keyboard.
There is one magnetic head but you can swipe in either direction and will emit data
in the right order.
Nearly all microcontrollers have existing PS/2 keyboard examples that would work
fine with this swiper. For Ardiuno users, we tried out PJRC's PS2_Keyboard library
with great success - just check the 'simple text' example for which pins you can
connect to on your 'duino (on an Uno we used digital pins 2 and 3). We suggest our
PS/2 adapter cable to make the wiring easy. Swipe any magnetic card and you'll see
the data appear in the serial terminal!
This reader will read and decode the first two tracks of standard magnetic-stripe
cards. It cannot write to cards, and cannot be modified to write to cards. We also
have a three-track reader which is more expensive but reads all the tracks.
Wikipedia has a great article on magnetic stripe cards which will help you
determine if you need a three-track reader or if a two-track reader is good enough.
http://www.adafruit.com/products/854
7/24/2015
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