What happens when a natural disaster happens and you're not sure if your loved ones are ok. Facebook is going to launch a new feature, which is currently in trial for Japan only to help you check if they are alright.

If you ever find yourself in an area hit by a natural disaster, you'll have the option to flag yourself as safe with all the ease of clicking "Like". Facebook will become a go-to source for peace of mind. It's the kind of tool you hope you'll never have to use, but good to have if you do.

[YokosoNews via NewScientist]