Efficient Ops
Mar 3, 2020 · Big Data
How to Instantly Verify COVID Travel History with a Telecom Big Data Travel Card
This article explains how a telecom‑based big‑data travel card can quickly reveal a person's 14‑day movement history, showing a green card for low‑risk travel or a red card for exposure, and provides step‑by‑step instructions with QR‑code scanning and screenshots.
COVID-19big datadigital health
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