It is required to utilize Authorize.Net’s free POS Application for Windows desktops running version 7, 8, 10, and above. The Chrome Extension acts as a mediator for the front-end and application to connect to a native application with the help of native messaging of Chrome. To process transactions you must have an active Authorize.Net account. Standard Authorize.Net transaction fees will apply. To sign up or get more information, please visit http://www.authorize.net/signupnow/