Why can't some houses in Kim Ma, Hanoi use smartkey?

After receiving feedback via Fanpage on the afternoon of August 23, 2025, on the morning of August 24, 2025, officers from the Regional Radio Frequency Center I (Radio Frequency Department) were sent to the scene to investigate the cause.

Through measurement and inspection, the authorities determined that the cause of the interference came from a QR code scanning device used to compare Vietlott results. Due to an error, this device continuously emitted signals in the 433.05 - 434.79 MHz frequency band, a frequency band exempted from licensing for remote control devices such as smart keys (according to Circular 08/2021/TT-BTTTT). After handling the interference device, the problem was resolved, resolving the inconvenience and anxiety of the people.

Smart key for motorbikes.

According to professional agencies, interference incidents are often caused by substandard or technically faulty radio equipment. Using products of unknown origin and without a certificate of conformity can directly affect safety, information security and daily life. Therefore, people and organizations need to buy equipment of clear origin, meeting technical standards, certified and bearing a conformity mark.

Nowadays, with the increasing use of smart locks, the risk of being affected by poor quality radio devices is also increasing. Therefore, the control and prompt handling of illegal, faulty or out-of-standard broadcasting sources plays an important role in protecting the technology infrastructure and the rights of users.

The Radio Frequency Department recommends that in case of detecting signs of interference with smart keys or other radio devices, people should report via hotline 0862.92.92.92 of the Radio Frequency Department, regional Radio Frequency Centers or local Department of Information and Communications.

Hien Thao (synthesis)

Source: https://doanhnghiepvn.vn/cong-nghe/vi-sao-mot-so-nha-o-kim-ma-ha-noi-khong-su-dung-duoc-smartkey/20250825114922890