Social media giant Facebook in a 225-page document responding to a set of 2,000 questions by the US Senate Committee on Judiciary admitted that it collects information from computers, phones, and connected devices, including mouse, that users use with its various services and that it combines this information to give users a personalised content.
Facebook had recently been under fire for its data privacy practices. According to reports, Facebook said that it tracks mouse movements to help its algorithm distinguish between humans and bots.
"We collect information from and about the computers, phones, connected TVs and other web-connected devices users use that integrate with our Products, and we combine this information across different devices users use," Facebook wrote in the document adding that the collected information is used to "give better personalize the content (including ads), to measure whether they took an action in response to an ad we showed them on their phone".
The social networking platform also admitted that it collects information about operating systems, hardware, software versions, battery levels, signal strength, available storage space, Bluetooth signals, file names and types, device IDs, browser and browser plugins from the users' phones, TV, and other connected devices.
The company also admitted to collecting information about users' reported gender, people users have removed from their friend list and every ad the user has ever clicked on.