Attendance recognition method needs to be reasonably positioned

Recently, the “Jiangxi Volunteer Service Smart Time Attendance System” has been fully upgraded and the nation’s first GPS location attendance function has been introduced. The GPS positioning system can supervise the attendance of volunteers and the time of acceptance of volunteer service, so as to further ensure the accuracy and authority of savings and evaluation results of volunteer service. Everyone is not unfamiliar with attendance. Large numbers of enterprises and institutions will use attendance machines for day-to-day management of employees. It is the simplest application to manage employees' attendance. Advanced applications can also track employees' position within the work area. .

The working principle of the attendance machine is to save the employee's identity (which can be the card number, which can be biometrics) on the attendance machine. When the employee checks in, from the stored identity, identify which employee is checking in, save the check-in time, and sign the employee regularly or in real time. The time is uploaded to the server database for the attendance software to analyze the attendance and statistical attendance use. The role of the attendance machine is to provide accurate attendance data for the attendance software, and management staff attendance depends on attendance management software.

The classification and development of attendance

From the beginning of the 1990s to the present, attendance machines can be divided into two categories: The first type is simple printing. When the card is punched, the original record data is directly printed on the card through the attendance machine. The recording time on the card is the original Attendance information can be used immediately for first-time users without any prior training.

The second type is storage. When the card is punched, the original record data is directly stored in the attendance machine, and then collected and summarized by the computer, and then processed by software to form the required attendance information or query or print. The attendance information is flexible and rich. First-time users need to do some pre-training to gradually master all their functions.

The first generation was a card attendance machine. In the 1970s, it gradually replaced manual record attendance. He regularly punched a hole in a metal-made card, and then used a photosensitive element and light projection to distinguish the person's number from the 8086 processor. Or 80286 processor. However, the metal sheet is easily deformed, causing an error in recognition. Coupled with the limitations of resolution, this type of attendance is not universally promoted in coal mines with thousands of people.

The second generation is a bar code attendance machine, which uses the optical principle to project a bar code image in the light column of a miner's lamp. A worker can use a miner's lamp to illuminate a special attendance probe before going down the well to attend. This method is convenient and quick. China's earliest use of this kind of attendance machine is to use it. But the miner's lamp is, after all, an instrument that often works in harsh environments. Therefore, maintenance is frequent and projection distortion is a problem that confuses everyone. .

The third generation is a magnetic card attendance machine, and now the most common attendance machine, like a coal miner who goes to a credit card, has become a habit for everyone.

The fourth generation is a biometric identity attendance machine, which is identified using human biological characteristics. Such a time attendance machine can identify a person's finger, hand hold, face, or face to the head. It can prevent the phenomenon of punching cards and improve the management system

The fifth generation is a video attendance machine and a photo attendance machine. It effectively solves the restriction of the biometrics on the environment and the use of the population. The combination of smart card management and manual management can effectively adapt to factories, industrial and mining enterprises and other environments.

Corporate Attendance Frequently Asked Questions

Although the scope of use of attendance machines has now penetrated into all walks of life, with various forms and types, corporate attendance is still the main site for attendance machines. The problem of using attendance machines in enterprises is based on the fingerprint attendance method. There are two main problems: First, the low recognition rate of attendance machines has caused blocking. Optical fingerprint attendance machine is currently one of the most widely used types of attendance machines. Optical attendance machines are relatively inexpensive and are favored by many enterprises. However, many users will find that in the use of optical fingerprint attendance machines, such punching problems often occur. Sometimes the employee’s fingers are too dry and the recognition takes a long time. Sometimes it is the fingers that directly lead to unrecognition. These conditions have caused more or less time wasted on the punching process. What is more affected is the working mood of the punchers. If attendance records due to fingerprint attendance machines are missing, the attendance commissioner will also need to make an artificial registration amendment, which will increase unnecessary work troubles.

Second, the phenomenon of punching cards on behalf of people is worrying. The worst situation is not slow, but on behalf of the card. It is understood that in many companies, individual employees obtain fingerprint films that coincide with their own fingerprint lines through online purchases and other methods to replace their own punch cards. On-line punching not only causes direct economic losses to the company, but also negatively impacts other employees' minds and causes indirect losses. The phenomenon of punching cards on behalf of the Chinese government has always been an undesirable phenomenon that companies are trying to fight. Facts have proved that the optical fingerprint attendance machine not only can not prevent the occurrence of generations of punch cards, but also may become the helper of the card punchers.

How to choose the enterprise attendance, need to be reasonably positioned

The problems of fingerprint attendance machines, in the final analysis, all stem from the problem of fingerprint recognition rates. With optical fingerprinting technology, the recognition principle is relatively simple, and it is also prone to the phenomenon of unstable identification. This is the reason why the user's fingerprint does not go well when his fingerprint is abnormal. Other types of attendance machines will also encounter these two problems. Then how should enterprises locate and select a time and attendance system that suits them? We must further understand the adaptation conditions of several types of biometrics.

Fingerprint signing is convenient and inexpensive. The prerequisite is that the employee's fingerprint should be clear. For example, catering companies, fingerprints of dishwashing workers are basically whitened, lines are not clear, and the production companies and workshop workers are exposed to oil stains. It is difficult to keep fingerprints clean and clear. These places are not suitable for fingerprint attendance machines. The commonly used fingerprint attendance machine, 1:N mode, can store 3,200 fingerprints. According to each person's input of two fingerprints, it can satisfy 1600 users and can reach a maximum of 5,000 fingerprints.

Face attendance machine, to maintain the face when entering the light conditions and sign light conditions can not differ too much. For example, when entering a face in a room, the sun shines on the person's face when signing in. When such a large amount of light is poor, face recognition is difficult. 1:N mode, commonly used 300 face machines, 500 face machines, up to 2000 face machines. As the number of faces increases, prices increase exponentially.

The biggest advantage of the iris attendance machine is that at any time, the eyes are always clean, clear, and can be judged with high accuracy, and the recognition speed is fast. Therefore, in the 1:N mode, 20,000 people have no problem. This is also the most suitable type for large-capacity 1:N among several biometric methods. The disadvantage of the iris attendance machine is that the position of the face is required to be high when signing in, which reduces the convenience of signing.

Finger vein and palmprint attendance machines are currently niche markets. I disdain analysis of convenience and performance, and the price alone has exceeded the scope that can be considered.

Therefore, for units with fewer than 500 employees and good office conditions, fingerprint attendance machines, fingerprint face attendance machines, and face attendance machines are suitable. Of course, although the number of units is large, they can accept decentralized sign-in. Some people will sign in on this machine. The other part will be fixed on another machine to check in. This can also be used as such.

For a large number of people, companies that do not accept distributed sign-ups are eligible to sign in with a face-to-face ratio of 1:1. If you do not want to bring a card and you can accept the signing method of the iris, you can consider the iris 1:N signing method.

For the bad signing environment, such as outdoor, but also need to solve the problem of punch card, it can only use the credit card photo attendance machine.

Of course, if you do not need to consider the factor of card punching, swiping the attendance machine is the best choice. It is fast, cheap, durable, stable and reliable, and has strong adaptability to the environment.