On September 6, China Telecom launched the “New Smart Account Serviceâ€. According to China Telecom, this is the core technology that only telecom operators can provide. The account login verification and SMS authentication methods are different. It is a mobile phone card for automatic authentication, no human participation, no password stealing risk. China Telecom said that the advantages of its smart account are first reflected in the account login. The core technology of the "automatic identification of the local number" is the ability to automatically obtain the number and automatic authentication of the mobile phone card through the integration of the telecommunication network. The login authentication time is shortened to the second level. In addition to the more convenient login, the account is still at a higher level in the security level. China Telecom said that the current security method for SMS verification is quite popular. However, with the proliferation of mobile phone systems and the increasing number of Trojan viruses, users are increasingly worried about the security of "soft authentication" and "hardware certification" has emerged. China Telecom's "hardware certification" security is effective against various viruses. According to reports, the "hardware-level high security level authentication capability" introduced by China Telecom means that the entire account authentication process is mainly authenticated by the mobile network and mobile phone card controlled by the security level of the telecom operator. There is no human participation risk in the whole process. No SMS blocking risk, no password stealing risk. China Telecom said that according to the definition of the certification security level by the GSMA organization, the security level of the hardware-level authentication capability adopted by the “Tianyi Account†is a high security level. When the user simultaneously uses the mobile phone and mobile phone card with near field communication function, the authentication certificate is built in the mobile phone card, and the authentication data is only transmitted between the mobile phone card and the mobile phone terminal, and the information is not in the whole process, that is, the mobile phone card shield Certification, its security level will reach the highest level, and the security level of the financial bank is the same. "The high security level authentication solution for Wing Accounts is of positive significance for reducing user risks and preventing illegal and criminal activities," China Telecom said. China Telecom also said that the "account" function will be extended from a single "login authentication" to "ecological development", and the core capabilities will be opened to the partners along with the "account capabilities". The main scenarios that can be foreseen at present include: "accounts" +Automatic identification", "Account + Payment", "Account + Cloud Storage", "Account + Big Data", "Account + 4G QOS", "Account + Points", "Account + Industry Application", etc., if cooperative application or The cooperation mobile phone terminal integrates “China Telecom Tianyi Accountâ€, which means that the application or mobile terminal will have the above “various core capabilities and resourcesâ€. Reflective films can generally be divided into two categories, one is metal reflective film, and the other is all-dielectric reflective film. In addition, there is a metal dielectric reflective film that combines the two. Silver Mirror,Aluminum Reflector,Reflective Coating Product,Dielectric Mirror Bohr Optics Co.,Ltd , https://www.bohr-optics.com
The metal reflective film uses general metals to have a large extinction coefficient, and the amplitude of light entering the metal is rapidly attenuated, and the light energy is correspondingly reduced and the reflected light energy is increased. Therefore, metals with large extinction coefficients and relatively stable optical properties are generally selected as metal reflective film materials, such as aluminum, silver, gold, and copper. Since aluminum, silver, copper and other metals are easily oxidized in the air, it is necessary to add a protective layer on the outside of the film to use these gold as a reflective film, such as silicon monoxide, magnesium fluoride, silicon dioxide, trioxide Dialuminum etc.
The increased reaction effect of the all-dielectric reflective film is based on the multi-beam interference effect. An optical film is plated on the surface of the optical element. In contrast to the antireflection film, the refractive index of the film is selected to be higher than the refractive index of the optical element as the substrate, which can improve the reflectance of the optical surface of the element.