According to the latest news, Facebook added a feature called "Security Check" that helps users broadcast their health and natural disasters. The tool can be run on the web, iOS, Android and feature phones. When the user is considered to be in one location, the security check will notify them by sending an alert or a text message. From the security check dashboard, users can see their friends in the same area, on Facebook, which has marked their own security.
Once the user has confirmed that they are in a safe zone, the security check notice will appear with other people's security notices. Users can be marked as "safe" in their number of censors on the Internet, and also enumerate the security of friends and family members, even if they may not have access to Facebook, the Internet or mobile phones. The company hopes that you will never use such tools, but natural disasters do not disappear in a short time, especially in Facebook's user base, which can prove effective in using this effective communication tool.