For privacy fans or others who want to keep their computers free of traces of what they've been doing online, Google's Chrome browser is getting an option to make sure Adobe Systems' Flash Player isn't getting in the way.
Web sites often store details about a user in small text files called cookies that can record details such as usernames, browsing history, and advertisements that have been seen. But storage abilities in Flash mean that even if a person deletes regular cookies, a Web site could reconstruct particulars from Flash data. There are other storage mechanisms arriving in browsers, too, leading to the term "evercookie," but Adobe is trying to take care of its responsibilities with a beta of.
Now Chrome is getting a checkbox to take advantage of that feature.
"As of this week's Chrome Dev channel release, you can delete local plug-in storage data (such as Flash LSOs [local storage objects]) from within Chrome by clicking Wrench > Tools > Clear browsing data and selecting 'Delete cookies and other site and plug-in data,'" said Chrome programmer Bernhard Bauer in a blog post yesterday. Chrome also can be set to delete such data when people shut down the browser.
So far, Flash is the only known plug-in that takes advantage of the feature, Bauer said.
, so expect Firefox, too, to add support at some stage for the Flash data deletion feature.