Facebook turns on Safety Check feature after Manchester explosion

Facebook has activated its Safety Check feature following an explosion in Manchester Arena that killed 22 people and left more than 50 injured.
 
Police and fans close to the Manchester Arena.Dave Thompson/Getty Images
The explosion occurred around 10:30 p.m. BST (5:30 p.m. ET) as thousands of people were leaving an Ariana Grande concert.
British Prime Minister Theresa May said officials are "working to establish the full details" of the what police believe is an "appalling" terrorist attack.
Safety Check asks people in the area of the incident if they are safe, and publicly marks them as such if they say they are. Users can see which of their friends have marked themselves safe, and asks those in the area if they are.
Facebook has activated Safety Check more than 300 times in the last year, according to CNET. It was also turned on during the Westminster terror attack and after Hurricane Matthew ripped through the Caribbean, killing hundreds of people on the island of Haiti. It was first deployed in 2014.

YouTube appears to be further opening up mobile live streaming

The Youtube company has been slowly rolling out access to mobile live streaming for many months now. The feature allows users to “go live” from their smartphones in order to stream directly to their YouTube channel.

Initially, the feature was open to those who had 10,000 channel subscribers or more – making it accessible only to YouTube’s bigger content creators. Then, in April, the company quietly dropped that down to just 1,000 subscribers as it continued the gradual expansion of the service.
That requirement is still officially in place, according to Google’s support page, which is why Google is not yet announcing the feature’s public launch. However, we understand from people familiar with the matter that it has been dropped for some users at this time.