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Hajj Begins with 1.4 Million Pilgrims Under Tech-Driven Heat and Crowd Protections

Biometric monitoring tools are now compulsory for all pilgrims as part of an expanded safety drive after last year’s fatal heatwave.

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A Muslim pilgrim enters the Grand Mosque, during the annual Hajj pilgrimage in Mecca, Saudi Arabia, Monday, June 2, 2025. (AP Photo/Amr Nabil)
A day ahead of the commencement of Hajj 2025, pilgrims perform morning prayers in the grand mosque in the holy city of Mecca, Saudi Arabia on June 3, 2025.
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Overview

  • Over 1.4 million pilgrims from more than 180 countries have arrived in Mecca to perform the annual rites.
  • Drones equipped with thermal imaging, artificial intelligence and facial recognition track crowd flows and enforce permit compliance.
  • The Nusuk system’s electronic ID card and smart wristband store biometric, health and travel data and control access to transport and services.
  • After last year’s 1,301 heat-related deaths, officials enlarged shaded walkways by 50,000 sqm, installed over 400 cooling units and mobilised thousands of additional medics.
  • Digital rights groups warn mandatory surveillance raises risks to pilgrims’ personal data and may diminish the pilgrimage’s spiritual focus.