How to Instantly Verify COVID Travel History with a Telecom Big Data Travel Card

How to Accurately Check Travel History?

Recently, many people have been worried that property managers might miss checking residents' travel histories after the pandemic, especially during the post‑holiday rush when entry to residential complexes requires a certificate based on ID documents, which cannot verify whether the holder has been to a high‑risk area.

The solution is to use a telecom‑based "communication big data travel card" that can be obtained by scanning a QR code. The system analyzes mobile network data to determine the user's locations over the past 14 days. If the user spent more than four hours in a designated epidemic area, a red card is issued; otherwise, a green card is shown.

Step 1: Scan the QR code

Step 2: Enter your mobile number and verification code

Step 3: Click "Query" and the travel card appears instantly

The resulting green card confirms no risky travel, while a red card indicates exposure. The article also notes that despite the hype around AI, blockchain, and big data, many everyday processes like community entry still rely on manual checks, increasing workload and uncertainty. The author encourages everyone to voluntarily show their green card when entering workplaces, neighborhoods, or stores to ease concerns.