How to inform the supermarket of secret contact?

Notification method of service overload secret connection:

1, the secret receiver is notified by the mobile phone, but there is also a short message reminder, and my nucleic acid code will also change from green to yellow.

When the self-isolation of 2.25 is screened with 5 nucleic acids, if there is no problem, the nucleic acid coding will turn back to green.

3. These mobile phones will contact and inform you of the situation at any time, and will specifically verify my itinerary. Everyone is self-disciplined in epidemic prevention and resistance.