This new feature simply analyse your location and determining that you’re in the affected area, Facebook offers you to tell the system that you’re okay to give your friends and family members a sense of your situation, said the Menlo Park-based social networking giant.
Facebook’s Safety Check will also send you notifications when someone checks in to say they’re safe, letting you stay up-to-the-minute in a situation where that is very important. If you are with friends or family when the natural disaster strikes, you can also check them in on their behalf, or let the Safety Check app (and your friends) know that you are not in the area.
You can also watch a quick video showing off the new feature below:
If you haven’t updated Facebook yet, you can update it from the App Store for free..