On Saturday, a devastating 7.8-magnitude earthquake hit Nepal. So far, the death toll has topped 3,000, and will likely go higher. As with other natural disasters, families and friends are struggling to get in touch with loved ones in the region to find out if they're OK.
That's why Google and Facebook have once again deployed their tracking systems to help. Google's system is called Person Finder and Facebook's is Safety Check.
Person Finder, which you can access here, lets you either say that you're looking for someone or that you have information about someone. Worried friends and family can put in a request to find out if loved ones are safe, and the person in the disaster area can indicate they're safe. The system also lets disaster responders upload information for or about people who might not have Internet access.
Facebook's Safety Check is a little different. If Facebook thinks you're in the area of the disaster, it will ask you, "Are you safe?" You can either tap the "I'm safe" button or the "I'm not in the area" button to notify your Facebook friends that you're OK. You can also indicate the status of other people you know.