How to choose a suitable "biometric" access control system

Access control systems using biometric technology have been increasingly used in the security industry, including banks, prisons, troops and other units have adopted biometric access control systems to enhance the security of management and ease of use. Since biometrics technology has begun to reach a large-scale application level, including product price, quality and technology have been relatively mature. After 9.11, in order to meet the needs of national security, biometrics began to enter practical applications, such as ID cards, bank withdrawals, etc. have adopted biometrics technology for identity authentication. In these external conditions, biometrics will be It can be quickly applied to intelligent buildings and some security projects. The entry and exit management of office buildings and some access control systems may choose biometric access control systems.

According to the identification object, the biometric identification system mainly includes:

1. Fingerprint: It is a relatively mature and suitable biometric feature for large-scale applications.
2. Palm shape: The technology and products are also relatively mature, but due to their large size and relatively high price, the application is limited.
3. Iris: It is one of the products with the lowest misrecognition rate at present, which can achieve the accuracy of one millionth, but it is restricted by more use due to its inconvenience, high price and large size.
4. Face: Due to the convenience of its use, this is also a biological feature that can be widely applied, but due to the relatively high rate of misrecognition and the impact of the surrounding environment (such as lighting, climate, etc.) There are certain limitations.

Biometric access control systems are divided according to product functions:

1. All-in-one: the biometric front end and the access control are integrated in one casing, and the general function configuration is: with time zone, combination, group, dual / multiple access options, tamper alarm, alarm output, door sensor Input (judging whether the door has been opened illegally and the door has not been closed), exit button, doorbell interface, at least 3A electric lock relay output, LCD display, keyboard input, and TCP / IP, RS485, RS232 networking. Generally speaking, it is necessary to have a user capacity greater than 500 users (three feature points per user), whether to support the setting of password entry and exit, etc. These functions are general access control requirements. Because the control part of the all-in-one is also with the front end, the safety of its products has certain limitations, and it must be used with caution in some places with high safety requirements.

2. A separate front-end reader, that is, a biometric reading head: it can output a standard card reader connection format, and can upload and download fingerprints through networking (TCP / IP and RS485). Other functions include adding fingerprint identification, tamper switch, and duress output to the existing RF card reader. In terms of access control, it is done by the related access control controller. Now professional access control controllers can already do more than just enter and exit functions. Internationally renowned access control brands like GE, Honeywell, LENEL, PCSC, Hull, etc. are already standard integrated security systems. The integration of systems including monitoring and alarming projects, and the use of biometric front-ends and professional access control systems are currently the mainstream applications of access control systems.

How to choose a suitable biometric access control system must first understand the following aspects:

1. Where it is used: First of all, it is important to understand where this product is used. It is very important to understand where it is used to help you choose the right biometric access control product.
2. Security requirements: Access control is used to ensure security, and the level of security is high or low. A top-level security requirement may use the most advanced biometric products, such as iris, etc., or a variety of biometrics can be used. Ways to improve its safety; if it is a general safety level, it can be selected according to the performance of different biological products.

3. Function: The function that satisfies the requirements is sufficient.

When selecting a biometric access control device, the engineering company should also consider the following aspects:

1. First decide which biometric system to adopt, whether it is a fingerprint or palm shape or some other method.
2. Whether to adopt the integrated machine or front-end identification + professional access control equipment.
3. Appropriate cost-effective products are not imported, expensive or good, but should be considered according to the safety requirements of the system.

In terms of biometric access control systems, fingerprint identification products are currently the most selected. After product selection, it is very important to choose which brand. There are several ways to choose from: choose one with market reputation, choose one with certification report, choose a strong manufacturer, choose For a product with good cost performance, choose a product that meets the requirements, and choose a product with high product stability. Among so many selection factors, comprehensive consideration is needed according to different situations.

As far as the access control system for fingerprint identification is concerned, there are many products in the market now, some are imported and some are made in China. The quality and price of domestic products are almost the same as those imported. Popularization, but most of the engineering companies (system integrators) are still not very familiar with the product, so in such an environment, it is more critical to try for a period of time first. Make sure that it is the right choice to buy a company or brand with service capabilities and to purchase from a regular manufacturer.