Invisible Flash

Enhance Web applications by secretly using the Flash Player

From the developerWorks archives

Michael Galpin

Date archived: January 4, 2017 | First published: February 23, 2010

Have you ever wished that Cookies were a lot bigger so you could store more data on the client, or that you could make cross-domain Asynchronous JavaScript and XML (Ajax) calls? If so, you are in luck. Both of these techniques can be accomplished using invisible Flash. So, just what is invisible Flash? It is not really invisible, however, it is 1 pixel by 1 pixel, which makes it pretty hard to see. And, it can be used as a way to tap into the capabilities of the Flash Player. In this article, you will learn how to build invisible Flash files that let you to store up to 100 KB of client-side data and make cross-domain Ajax calls—all without your users ever knowing that Flash is being used.

This content is no longer being updated or maintained. The full article is provided "as is" in a PDF file. Given the rapid evolution of technology, some steps and illustrations may have changed.



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