Can a hotel room be protected from cameras without inserting a card?

Hotel rooms can prevent cameras without inserting cards.

The room power-off method is used for some pinhole cameras that need continuous power supply without electricity. In order to avoid being photographed, you can turn off the power of the room before going to bed.

In the dark, turn on the camera of the mobile phone, and then we take a picture of the patch panel in the room. If there is infrared light, it means there is a camera inside.

Hotel related:

Hotels (also known as hotels, hotels, inns, guest houses, business trips, inns, hotels in China, and hotels in Malaysia and Singapore) are basically defined as business organizations that provide safe and comfortable spaces for users to have a short rest or sleep.

Generally speaking, it is a place for guests to stay and eat. Specifically, a hotel is an organization that provides services to its guests through the sale of rooms, restaurants and comprehensive service facilities, taking its buildings as evidence, so as to obtain economic benefits. The hotel mainly provides accommodation services, living services and facilities (bedtime services), catering, games, entertainment, shopping, business centers, banquets and conferences for tourists.