(3 stars)


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5,000 - 10,000 downloads

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View bigger - Rhombus for Android screenshot
View bigger - Rhombus for Android screenshot
View bigger - Rhombus for Android screenshot
This is essentially a beta right now. If you try this and it does not work, I would appreciate if you could contact me with the type of phone and app settings you were using.

Rhombus uses the Squareup magnetic stripe card reading dongle to read any standard format magnetic stripe card. You can use it to see what information is on your credit cards, loyalty cards, driver's license, and more. When a credit/debit card is scanned, it attempts to determine the issuer. In the screenshot above, you can see a redacted result of scanning an expired visa card. One of the other screenshots shows a scan of a Main Event fun card.
Rhombus reads track 2 by default, but will read track 1 if the card is offset by a small shim.
Rhombus does not have internet permissions, so it cannot send out any information about cards you may scan.

Tags: rhombus, rhombus card reader, rhombus square reader help, rhombus activity, read magnetic stripe card with, squareup magnetic stripe card reading, mag stripe reader, rhombuslib, magstripe reader open source, rhombi.

Recently changed in this version

Removed a few debug statements that might leak info through logs, attempt to fix occasional NullPointer crash on Square dongle insert/remove.

Comments and ratings for Rhombus
  • (53 stars)

    by Jay Lim on 20/05/2014

    So far, with this configuration, i manage to get more 90% success rate. Sample rate: 44100Hz Threshold: 40% Silence level: around 500

  • (53 stars)

    by Samuel Zavala on 07/05/2014

    however about 3 hours later i had a charge for 10 dollars from the xbox store. i dont own and xbox. this needs to be looked into.

  • (53 stars)

    by Bytee Baud on 04/05/2014

    I tried every settig and different card ant it didnt work with Samsung Tab3

  • (53 stars)

    by Rahul Kumar on 17/04/2014

    Hello, I want this application source code.i want to understand this code and check hows it works.

  • (53 stars)

    by chris warren on 27/02/2014

    Droid RAZR HD, won't read anything. I've adjusted settings around and nothing, I'm using the Paypal card reader but it's the exact same thing

  • (53 stars)

    by David Zendzian on 07/12/2013

    Just says bad data every time

  • (53 stars)

    by Terry Johnson on 23/11/2013

    Did not work at all for me LG-Optimus G, application opens then closes instantly.

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