Barcelona trials NFC wristbands and keyrings as discreet alarm triggers at La Mercè 2026

News wire · Source based brief

Barcelona is piloting 3,000 passive NFC wristbands and keyrings during the La Mercè festival to serve as discreet emergency triggers when tapped against a user's smartphone. This deployment demonstrates how low-cost passive tags can be integrated with mobile infrastructure to enhance public safety without the high hardware costs or battery requirements of active tracking devices.

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