Rhombus

Pretty inconsistent results (correctly reads ~10% of the time). Seems to work better with a faster swipe. I'm using a knock-off Square reader from china (via Aliexpress).

After adjusting threshold, sample rate, and noise to get the app to detect swipe with some precision I get nothing but read errors despite trying different settings. The developer doesn't support this anymore..

Doest work at all. Not even a little bit

Didn't read anything other than "bad read" for a debit and generic card. Only time it read something different, it just said % in the track data. Tested on Nexus 5X.

Did not work with galaxy s6 and square card reader

Didn't work in my Galaxy S7

wont read my cards with square and an LG G5

Not work on lenovo vibe shot and asus fonepad

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. Update: I now have a generic reader, and it reads cards 2 out of 5 times with the app.

If your card not read correctly, try slower or faster swiping process, if you got the right speed feeling, most of your swipe will read correctly

Does not work with HTC Desire 612.

It's what I'm looking for. Seems to open fine but Says "bad read try again" with the new square reader which is due to the encryption used. Cards tested were gift cards and prepaid phone cards. Also you could add a "prevent phone from sleeping" feature and then give the option to turn it on or off. other than that, this app was what I was after.

It doesn't work Moto G 1st and 2do generation. Always 'Bad read'. I tried with different settings without any result.

On my xperia i could access settings but not on my droud maxx still works kinda tho

Does not work with HTC Desire 612.

Used the square reader with a rooted CyanogenMod 12.1 moto x doesnt even attempt to read from the card reader

I have the older Square reader and the new one, neither worked at all. The best I could get is, "bad read, try again" after trying with multiple cards of different kinds. However, the description says it's a beta so hopefully this app gets worked on more. I tried each card fast, slow, pressed hard and not hard, nothing worked.

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.

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.

Updates and/or source code would be nice

Does not work with regular settings on the OnePlus One. Played around with the settings and still does not work.

Worked good, I make gift cards for a company, this will help me batch test. Samsung Galaxy s5, square reader

Love this

Still works

Tried it on a few cards and they worked. Great app

Consistant bad data reads on multiple items. Searching for contact method now...very nice interface :-( can't wait to get it working.

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

Works on Samsung galaxy s2 skyrocket, but not on Acer a100. I think most acers have had a problem with it. I had to adjust settings to get it working on Samsung. Will probably contribute to open source later.

Can you display the raw waveform so we can set the silence and threshold values for our device based on data? I can't get it to read on Galaxy Nexus...

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.

... That doesn't work on a Razr Maxx.

Samsung Galaxy Note. I had no luck with it either. I received the same error stated earlier,"bad read, try again."

Can u tell me how to use it. plz

I have a samsung mega and square reader with 4.4.4, used all different settings and it simply says "bad read, try again"

Was about to give 1 star rating, but after reading a great article on instructables found out that Square reader has a reader with an encryption. Don't really get yet how come and why some other devices are finely read data, but anyways. hope for fix; and gonna try to do it myself soon.

Did not work with Motorola Droid M.

Didn't work at all for me on Acer A500 using various cards the SquareUp app can read easily. Every swipe failed with a, "bad read, try again" error.

This worked with my Galaxy S3 (model i747). I used the original Square credit card reader and was able to read Visa, Master Card, driver's license, and several other magnetic stripe cards. By creating a shim, I was able to read each track on the card and pull data such as card number, expiration date, name, and address. I set the sample rate to 22050, threshold level to 50%, and silence level to 500. If you receive the "bad read" error, try applying different pressure to the card as you swipe or swipe back and forth. The Square readers are temperamental. Functionality is perfect but I'd like to see some improvements to the user interface.

Works with the really cheap square reader from ebay, $4 or so. Just misses a way to include more data in the csv with vendors

Did not work on a Droid X2 version 2.3.5. Get the bad read message. Tried various credit cards. Square worked just fine, even on a card that I have trouble with at the store. It would be nice to know what it thinks it got.