Is there a camera on the epidemic warning line?

Generally speaking, there is no such thing.

The epidemic prevention and control cordon is generally a telescopic isolation belt to isolate people. There are usually no cameras.

Cordon isolation belt is also called telescopic isolation belt, one-meter line, railing seat, cordon, mobile guardrail, etc. , widely used in daily work and life, whether it is airports, banks, post offices, hotels, or institutions.