Pilgrims descend on Mecca for 'smart hajj'
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This year, the Saudis have launched a "smart hajj" initiative, with apps to help pilgrims with everything from travel plans to medical care.
Asefny, for example, is an app launched by Saudi Arabia's Red Crescent to help pilgrims request emergency medical attention.
Authorities are able to locate those in need through the app.
The Saudi hajj ministry also runs the Manasikana app, which provides translation for pilgrims who do not speak Arabic or English.
Muslim worshippers pray around the Kaaba, Islam's holiest shrine, at the Grand Mosque in Saudi Arabia's holy city of Mecca on August 16, 2018