SwipeYours

App that helps developers understand KitKat's new Host Card Emulation feature for payments. App allows you to enter your own magnetic stripe data from a Visa card and use in an NFC payment protocol called Visa MSD. While Visa did not intend for card holders to use their data this way, the app will work with Visa cards from most banks. Visa MSD is a supported payment protocol by most NFC payment terminals in the United States and Canada.

To obtain the magnetic stripe data from your card, you will need a reader. In the US, they are available on both Amazon and Ebay for around $20 delivered. The inexpensive ones are USB devices that act as keyboard input, so no special drivers are needed on Windows or Mac OS X computers. While I'm sure there's more secure options, you can use an app like Google Keep to quickly transfer the swipe input to your phone and paste it into the app. The card data entered into the app is stored using Android's SharedPreference API in a way that is not accessible by other apps on a non-rooted phone.

The full source code to SwipeYours is available on Github:https://github.com/dimalinux/SwipeYoursBlog describing many details of SwipeYours:http://blog.simplytapp.com/2014/01/host-card-emulation-series-swipeyours.htmlSwipeYours requires both NFC and Android 4.4 (KitKat) or newer for HCE (Host Card Emulation).

Privacy: This app has no Internet permissions and will not transfer your card information anywhere other than over the NFC interface for payments.应用程序，可以帮助开发人员了解奇巧的付款新主机卡仿真功能。应用程序允许您从Visa卡输入自己的磁条数据，并在NFC支付协议使用称为签证MSD。虽然签证并不打算为证持有人使用他们的数据这种方式，应用程序将与来自大多数银行的Visa卡。签证MSD是在美国和加拿大的大多数NFC支付终端支持的支付协议。

要获得从您的卡上的磁条数据，您将需要一个阅读器。在美国，他们可在亚马逊和易趣为20美元左右交付。廉价的是充当键盘输入的USB设备，因此需要在Windows或Mac OS X电脑不需专用驱动。虽然我敢肯定有更安全的选项，你可以使用一个应用程序，如谷歌保持在刷卡输入快速传输到您的手机，并将其粘贴到应用程序。进入应用程序中的数据卡是一款采用Android的SharedPreference API中的方式，是不是由其他应用程序访问一个无根的手机存储。

完整的源代码，以SwipeYours可在Github上：https://github.com/dimalinux/SwipeYours博客描述SwipeYours的许多细节：http://blog.simplytapp.com/2014/01/host-card-emulation-series-swipeyours.htmlSwipeYours既需要NFC和Android 4.4（奇巧）或更高版本的HCE（主机卡仿真）。

隐私：这个程序有没有上网权限，并不会转移您的信用卡信息不是通过NFC接口用于支付其他任何地方。