Contactless EMV transactions from your browser View in browser
Control a Chip Card Reader with Your Browser!

Did you know you can control a chip card reader, and carry out contact or contactless EMV transactions, from your browser, using JavaScript? It's actually pretty easy.

In a previous post, we showed how to establish USB connectivity using NodeJS, the popular JavaScript runtime engine. In a followup post, we saw how Websockets can be used for inter-process communication between NodeJS and any browser (even older browsers that don't know about Websockets).

If we tie together the USB connectivity code and Websockets code, it becomes possible for a web page to control a USB device (such as our VP4880 3-way card reader) using only JavaScript. That's the code we want to show you on the blog today.

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