The purpose of the tracking pixel is to give visibility on the sales that are generated on your site by users leaving Skyscanner.
A tracking pixel is a 1 pixel square image that you include on the confirmation page. It is installed like an image, and the URL of this image has various parameters to pass information on the booking that was made. When the confirmation page loads, it makes a hit to the Skyscanner servers through the tracking pixel and records a sale on our side.
We ask that you install the pixel on the confirmation page and not at intermediate steps, so that the pixel only executes when a sale is actually made.