The appropriate use unit of the fingerprint attendance system is defined as: The number of attendance units is small, and the environment is good, such as government agencies, or less than 100 enterprises with good environment, otherwise it is very reluctant to use and uncomfortable, or does not achieve attendance. Discarded by effect.
The civilian technology for fingerprint recognition is still immature, and the true recognition rate is below 95%, which means that basically 100 fingerprints cannot be identified by more than 5 individuals, or it must be repeatedly identified.
The current fingerprint attendance machines adopt the combination of fingerprint recognition and password recognition because there are more cases where fingerprints cannot be recognized.
Fingerprint recognition technology is currently not suitable for normal finger recognition, wet fingers, too dry fingers, peeling of fingers (including seasonal peeling), broken fingers, etc., but can only rely on the keypad of attendance machines. Press password instead of attendance identification check-in.
Since everyone has a pre-set backup password, you only need to tell others about your password, and you can help the card. This is due to the fact that after using the unit to trust the “can prevent generations from punching cards†lie, the most easily overlooked and unexpected problems exist.
Why do you say that fingerprint attendance is only suitable for use in small units? It is because of two reasons:
1) Fingerprint recognition For the proximity card swiping time is much longer, to identify the fingerprint as a person's recognition cycle by a person standing before the attendance machine to identify the fingerprint to the next person, usually around 6-7 seconds, that is, each In the case of a normal one-time identification, it takes about 6 seconds to complete the attendance check-in. If 100 people even arrive in a row and wait 5 minutes in advance, it will take 600 seconds or 10 minutes to finish, that is, In terms of 100 people, a person would have been five minutes earlier. The most normal thing is to wait until his signing is completed and he is already late. The staff must have many complaints.
2) Fingerprint Attendance Generally, in order to improve the recognition rate, each person is required to leave 2-3 or so fingerprint files of different fingers stored in the attendance machine. When one is not recognized, he can quickly switch to another, so that repeated attempts can be achieved. About 95% of the recognition rate, and the fingerprint storage capacity of the attendance machine is limited. According to the price level, there are 700 pieces of capacity, there are 1000 pieces of capacity, and there are more capacity. We use 1000 pieces of capacity as an example. If each person holds three fingerprint files and divides 1,000 pieces by three pieces, the total number of people that can be accommodated is more than 300, but the most normal attendance time is: 300 people * 6 seconds = 1800 seconds, that is, only A single sign-in time is more than half an hour before the end. It takes staff to come to work as early as possible, and how much time does it take to get off work? Therefore, from this point of view, the fingerprint capacity of the attendance machine is only a theoretical data, allowing you to spend more money. When the actual attendance, the problem is large.
The key part of the fingerprint attendance machine is the most fragile part of the fingerprint film. The longer the fingerprint film time is used, the lower the fingerprint recognition rate. In the absence of any human scratch damage, a fingerprint film generally becomes more and more difficult after six months. The more fingerprints are not recognized or need to be identified repeatedly. The solution is to replace the fingerprint film. The replacement of a fingerprint film requires several hundred dollars. It is not included in the service fee. It is a separate material fee, usually about six months to a year or so. It is necessary to change once. If the maintenance party says that someone is dissatisfied with the fingerprint attendance and is deliberately sabotaged at the time of attendance, the frequency of replacement is higher and the cost is rather high.
The civilian technology for fingerprint recognition is still immature, and the true recognition rate is below 95%, which means that basically 100 fingerprints cannot be identified by more than 5 individuals, or it must be repeatedly identified.
The current fingerprint attendance machines adopt the combination of fingerprint recognition and password recognition because there are more cases where fingerprints cannot be recognized.
Fingerprint recognition technology is currently not suitable for normal finger recognition, wet fingers, too dry fingers, peeling of fingers (including seasonal peeling), broken fingers, etc., but can only rely on the keypad of attendance machines. Press password instead of attendance identification check-in.
Since everyone has a pre-set backup password, you only need to tell others about your password, and you can help the card. This is due to the fact that after using the unit to trust the “can prevent generations from punching cards†lie, the most easily overlooked and unexpected problems exist.
Why do you say that fingerprint attendance is only suitable for use in small units? It is because of two reasons:
1) Fingerprint recognition For the proximity card swiping time is much longer, to identify the fingerprint as a person's recognition cycle by a person standing before the attendance machine to identify the fingerprint to the next person, usually around 6-7 seconds, that is, each In the case of a normal one-time identification, it takes about 6 seconds to complete the attendance check-in. If 100 people even arrive in a row and wait 5 minutes in advance, it will take 600 seconds or 10 minutes to finish, that is, In terms of 100 people, a person would have been five minutes earlier. The most normal thing is to wait until his signing is completed and he is already late. The staff must have many complaints.
2) Fingerprint Attendance Generally, in order to improve the recognition rate, each person is required to leave 2-3 or so fingerprint files of different fingers stored in the attendance machine. When one is not recognized, he can quickly switch to another, so that repeated attempts can be achieved. About 95% of the recognition rate, and the fingerprint storage capacity of the attendance machine is limited. According to the price level, there are 700 pieces of capacity, there are 1000 pieces of capacity, and there are more capacity. We use 1000 pieces of capacity as an example. If each person holds three fingerprint files and divides 1,000 pieces by three pieces, the total number of people that can be accommodated is more than 300, but the most normal attendance time is: 300 people * 6 seconds = 1800 seconds, that is, only A single sign-in time is more than half an hour before the end. It takes staff to come to work as early as possible, and how much time does it take to get off work? Therefore, from this point of view, the fingerprint capacity of the attendance machine is only a theoretical data, allowing you to spend more money. When the actual attendance, the problem is large.
The key part of the fingerprint attendance machine is the most fragile part of the fingerprint film. The longer the fingerprint film time is used, the lower the fingerprint recognition rate. In the absence of any human scratch damage, a fingerprint film generally becomes more and more difficult after six months. The more fingerprints are not recognized or need to be identified repeatedly. The solution is to replace the fingerprint film. The replacement of a fingerprint film requires several hundred dollars. It is not included in the service fee. It is a separate material fee, usually about six months to a year or so. It is necessary to change once. If the maintenance party says that someone is dissatisfied with the fingerprint attendance and is deliberately sabotaged at the time of attendance, the frequency of replacement is higher and the cost is rather high.
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