Rhombus

Rhombus


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.

Recent changes:
Removed a few debug statements that might leak info through logs, attempt to fix occasional NullPointer crash on Square dongle insert/remove.
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Free
67
3.4
User ratings
62
Installs
5,000+
Concerns
0
File size
168 kb
Screenshots
Screenshot of Rhombus Screenshot of Rhombus Screenshot of Rhombus
About Rhombus
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.

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

Android Market Comments
A Google User
Apr 25, 2015
Bad read? Dosent work for me one my HTC ONE. All it continues to say is bad read on any and all cards. May be operator error but I think it's just my pos phone.
A Google User
Feb 14, 2015
Nice idea Updates and/or source code would be nice
A Google User
Dec 26, 2014
Good idea, needs refinement Red circle stays red, will not read cards, using a homemade reader, an actual credit card reader head direct wired to the mic terminals of the TRRS plug. May work with the square reader, but I don't know how to tell the old non encrypted one from the new one. Tried tweaking settings, still no luck.
A Google User
Nov 21, 2014
Nice Worked good, I make gift cards for a company, this will help me batch test. Samsung Galaxy s5, square reader
A Google User
Nov 5, 2014
Doesn't read I have a samsung mega and square reader with 4.4.4, used all different settings and it simply says "bad read, try again"
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