A report from the Wall Street Journal on Wednesday said Facebook is currently testing software that will track your cursor across your computer screen. The report said the social site might also be able to "see" how long you're staring at your news feed on your mobile phone.
Facebook could use the data for "an endless range of purposes – from product development to more precise targeting of advertising," the paper reported.
The silver lining, according to Facebook's analytics chief, is that is might never roll out.
"We will probably know in a couple months," he told the WSJ.
This idea isn't new. Shutterstock, an online site for digital images, "records literally everything that its users do on the site," the paper reported.
Facebook contacted 8 News NOW late Wednesday and released a statement.
"Like most websites, we run numerous tests at any given time to ensure that we're creating the best experience possible for people on Facebook. These experiments look at aggregate trends of how people interact with the site to inform future product decisions. We do not share this information with anyone outside of Facebook and we are not using this information to target ads."
Read the full article from WSJ.com.