Do you really know something about biometric fingerprint scanners?
This article will introduce you to the most comprehensive biometric fingerprint scanner guide from 16 aspects, such as what is a fingerprint scanner, how it works, how to use a fingerprint scanner, trends and so on. Check it out together!
In this modern age, securing physical locations and digital data is increasingly difficult. Thieves can pick locks or force entry. Hackers can steal passwords or make many other kinds of intrusions.
Biometric data is becoming the key that cannot be lost or the password that cannot be copied. Biometrics such as facial recognition and retinal patterns are great tools, but fingerprint recognition is the most prevalent tool. Smartphones and other wearable devices use fingerprint sensors to improve device security, and fingerprint sensors are increasingly popular for highly secure access to buildings or facilities.
How fingerprint scanners work
Fingerprint readers read fingerprints in a number of different ways, including the basic principle of capacitive sensing technology, which conducts fingerprints based on changes in the electrical resistance of a live finger - note the word "live" - on the surface of the finger. The basic principle of capacitive sensing is that it conducts the fingerprint image based on changes in electrical resistance on the surface layer of a living finger - note the word "living". The cells in the epidermis of the skin, including the epidermis of the finger, are non-living. Peeling off the non-living cells of the epidermis reveals the first layer of living skin cells, which have a certain amount of electrical resistance. They also make up specific shapes on the skin surface - the common fingerprint crest lines and furrows. The combination of the specific electrical qualities in the cells and the arrangement of the cells allows the resistance of the skin surface to be measured and its variation to be unique.
This is how the capacitive reader works - it first reads the changes in electrical resistance of the living epidermis of the finger and then conducts a finger map showing these changes. The map looks like a standard fingerprint image displayed by a police officer. The map of resistance changes is called a fingerprint image. After a fingerprint image is generated it is saved or compared to another fingerprint image to determine if they are the same. Capacitive sensor technology dominates the fingerprint world; all other fingerprint recognition technologies are technology followers. The technology is also very mature, stable and reliable, and is one of the relatively least expensive fingerprint sensing technologies on the market today
Optical finger sensor
The optical scanner takes a digital picture of the fingerprint in a scanner under bright light. By seeing the ridges and valleys of the fingerprint, a digital image is made by a light-sensitive microchip, which converts the digital image data into a binary code. The reference code on the scanner is compared with the code of the finger to determine if it is accessible.
However, the digital image can be artificially copied and fed into the sensor, although this rarely happens.
Capacitive fingerprint sensors
The most commonly used scanner is the capacitive fingerprint sensor, and most smartphones rely on this technology. Just like capacitive touchscreens, capacitive fingerprint sensors generate an electrostatic field by measuring the conductivity of the finger and generating a digital image based on the electrostatic field.
The tiny capacitive array circuit in a capacitive fingerprint sensor helps track the details of the fingerprint. The charge stored in the capacitor is changed by the use of a conductive plate with fingerprint ridges. The valley of the fingerprint is filled with non-conductive air, which determines the conductivity of the finger in the sensor. The changes are tracked by an operational amplifier integrator, which then records and analyzes this digital data with an analog-to-digital converter.
Since capacitive fingerprint sensors do not record images, it is difficult to get around this technology, and if other materials are used, then the charge on the capacitor will record different changes. This is why these sensors are more expensive, but more secure and sophisticated.
How fingerprint scanners work style
Unlike the large number of passwords needed to access computers, web sites and company applications, fingerprints are not forgotten, misplaced or shared.
Today, computers often hold sensitive and confidential data. They are also the access point to the company network. As systems become smaller and more mobile, they face an increased risk of loss or theft. Fingerprint readers used in combination with passwords can provide a higher level of authentication security in accessing data or networks than security achieved with only one form of authentication.
Trends in fingerprint scanners
The future, the huge market prospects of fingerprint identification technology, will have a major impact on the international security industry.
Fingerprint identification system product series rely on fingerprint identification technology, without the traditional password, without IC card, without deliberately remember. HFSecurity Group uses fingerprint scanner technology in different places, such as families, enterprises and institutions, banks and securities trading. Most of the fingerprint safes are used for storing confidential and valuable items such as information, documents, papers, jewelry, etc. The same fingerprint open, to avoid the file cabinet stored too much, the key a large string of complicated. Safe, convenient and fashionable.
The application of fingerprint identification products, can greatly enhance the office grade. Although the market of fingerprint identification series products is not yet fully popular, but the market has been started, the development is also very fast. According to the relevant information, the demand for fingerprint identification technology is gradually increasing, such as the Ministry of Public Security to solve cases, a considerable part to use this technology to support.
Fingerprint identification technology is the means of identification realized by computer, and is also the most widely used biometric identification technology today. In the past mainly used in the criminal investigation system. In recent years has gradually to the civil market. At the same time, the civil market also puts forward the requirements of fingerprint recognition technology with miniaturization, inexpensive fingerprint collection equipment, high-speed computing platform, and higher recognition accuracy rate to meet the needs of various applications.
Fingerprint identification technology is the mainstream technology of biometric identification technology, is the mainstream technology of identity authentication, it has been widely used in all walks of life. Now with fingerprint function devices, there must be a physical key for you to scan a fingerprint, but with the development of touch and display chips, highly integrated, the future development trend is any position, we can complete the fingerprint recognition on the screen. Embedded fingerprint recognition appears at the core, so any limitations do not affect the industrial design of the device manufacturer's device. As the integration of fingerprint recognition and touch display technology becomes more and more mature, it will also become more and more widespread, for example, fast payment, identification, personalized preference customization, etc. It is likely that the password will be replaced by fingerprint recognition technology.
Fingerprint recognition will certainly come into life, and its market potential and market prospects are optimistic and broad.
What are the advantages of using biometric fingerprint instrument
Fingerprints are unique features of the human body and they are complex enough to provide sufficient features for identification.
If you want to increase reliability, simply register more fingerprints and identify more fingers, up to a maximum of ten, and each fingerprint is unique.
Scanning fingerprints is fast and very easy to use.
To read fingerprints, users must bring their fingers into contact with each other and direct contact with the fingerprint capture head is the most reliable way to read human biometrics, which is one of the main reasons why fingerprint recognition technology has been able to capture most of the market.
Fingerprint capture head can be more miniaturized and will be more affordable.
The fastest recognition speed and the most convenient application
Easy to promote, the most widely used, and highly adaptable
Low error rate and rejection rate
High stability and reliability
Easy to operate, no special training can be used
High security, system scanning is not harmful to the body
Fingerprints are reproducible
How to choose a biometric fingerprint scanner that suits your needs
Start by defining the planned customer usage model, including typical users, normal or desired interactions, product site environment and location, and any strategic plans. Consider what the user will be wearing (e.g., a mask), the user's height, hygiene requirements and opt-in requirements. Determine the speed at which biometrics must respond during POC testing and test it. The better the registration image (template), the better the matching performance and overall user experience.
Cost and Security
First select the type of biometric fingerprint scanner that will be used, optical or capacitive, single or dual finger, and then determine the price point required. Determine the right product and get volume pricing to understand the unit cost of mass production. Software is usually charged a license fee and is often negotiable. As production volumes increase, the unit cost of production decreases. Select the biometric method that best meets the functional and security requirements while meeting the target price.
The level of biometric security required depends on the asset being protected and the matching usage model. A 1:1 model (e.g., cell phone) may be appropriate for less secure biometric applications. However, in a 1:N model, such as airport security, more secure biometrics are required.
To select the most appropriate biometric technology for the product, compare each company's false acceptance rate (FAR) and false rejection rate (FRR). FAR indicates the biometric capability to turn away intruders, while FRR indicates the biometric capability to allow access to registered users. Ensure that all biometric companies under consideration can at least provide this information.
Hackers and criminals are constantly trying to break through technologies that include biometrics. Ensure that each technology has robust Presented Attack Detection (PAD), which ideally has been certified by a third party. Understand whether any personally identifiable information (PII) needs to be captured and determine how PII will be handled, including who will manage the data (i.e., your company, biometric vendor, or other third party). Ensure that those who control PII use the latest encryption standards and employ technology to protect this data in memory, on the network and in biometric databases. It is also important to understand the applicable European GDPR compliance standards.
Each vendor considered should be evaluated throughout the testing process. Make sure the vendor is trustworthy, provides good customer support and delivers on its promises. Evaluate the vendor's engineering capabilities and support model to ensure that it can support any required design changes and support your engineers in delivering the best functioning product.
Choosing the best biometric for your exact use case will take some time and effort, but it has the potential to grow your business and keep your customers happy. Don't shorten the process and don't go with the cheapest solution without conducting any research. As the saying goes, you get what you pay for.
The 5 best biometric fingerprint scanners on the market today
Biometric fingerprint scanner is most widely used in which occasions
Fingerprint identification device is a special instrument for identification through the biometric fingerprint of human body. Fingerprints are unique and unchanging for life, so it is very safe and convenient to be used as one of the ways of identification. Fingerprint identification device is widely used in banking, social security, public security, attendance, access control, computer and network security, Internet shopping payment means and other occasions of identity authentication.
Fingerprint telecommunication company
Toddler toe registration filing vaccine information
Factory personnel management
What is the price of biometric fingerprint scanner
At present, the fingerprint instrument scanner on the market from tens to hundreds, but the technology of fingerprint scanner is now more stable, so the price is relatively cheap, why there are different prices appear. We can't just focus on the price when buying fingerprint scanner, besides the price, we also need to pay attention to the qualification of the supplier, the software and hardware capability of the supplier, whether it can provide the necessary help for the next cooperation.
Secondly, depending on the fingerprint head specification, the price will change accordingly, FAP10 fingerprint head is less expensive than FAP20, FAP20, FAP30, etc.
The price of FAP10 fingerprint head is lower than FAP20, FAP20, FAP30, etc. The price of fingerprint equipment for two-finger rolling collection is also higher than that of single finger collection.
Contact us and we will send you a free quote for a fingerprint scanner.
How to use biometric fingerprint scanner
1. Open APK 2. Press Menu button, get into menu 3. choose Connect a Device 4. If the device was connected before, it will show in Paired Devices; If not，click Scan for Devices. The name of the device is the same as shown on the back side of the device. 5. Select right device, connect it. 6. Click function button in the demo app for testing. 7. In ID means operating in the device, the data will store in the device. 8. In Host means operating in host, data store in the host. 9. Device: get device number and battery info
1. In Windows control panel，click Bluetooth Setting to connect the device 2. Open Demo，select right serial port 3. Operation is same with Android Demo Note: not all the functions shown in the Demo are available, it depends on the hardware of the device
Can the biometric fingerprint scanner be used with a cell phone?
If you buy a USB fingerprint scanner, determine what type of interface your phone has and connect it to the fingerprint scanner via a USB adapter.
If your fingerprint scanner has a Bluetooth function, it is very easy to connect directly to the device via Bluetooth.
Whether the biometric fingerprint scanner can be connected to a computer
Computers are known as windows and linux systems. Some fingerprint scanners cannot be used with Linux, but HFSecurity's self-developed fingerprint scanners can be connected to Windows and Linux.
If you want to try our software, send your request directly to our email address and we will reply to you within 2 hours.
Can the biometric fingerprint device be connected to a computer?
Computers are known to us as windows and linux. Some fingerprint scanners cannot be used with Linux, but HFSecurity has developed its own fingerprint scanner that can be connected to windows and Linux.
If you want to try our software, send your request directly to our email address and we will reply to you within 2 hours.
Why does the biometric fingerprint scanner not work?
1. The fingerprint identification button surface is affected by sweat, water and dust after a long time of use, and the identification response gradually decreases.
2. The motherboard failure, resulting in fingerprint recognition module can not respond to work, can not complete the registration collection and other related work.
3. Fingerprint identification module quality problems after a long time pressed use can not be used.
4. The equipment in the process of use accidental fall or bump lead to fingerprint identification row line appears accidental break or poor contact, lead to fingerprint identification can not work normally.
Second, try to solve.
1. Wipe the relevant area with a clean tissue or soft cloth to ensure that the fingerprint recognition area and the finger for recognition are not in a clean and dry environment.
2. Switch on and off and system detection processing, so that the system is in a normal operating state, try to fingerprint recognition.
3. After repeatedly trying the fingerprint module can not respond, to the relevant after-sales service for fault description, and then for professional fault detection: fingerprint identification quality problems, human factors caused by the fingerprint identification of internal wiring problems, for professional maintenance and replacement processing.
What are the classifications of biometric fingerprint scanner
At present, the market application of fingerprint image acquisition technology mainly has four types: optical scanning equipment, temperature difference induction fingerprint sensor, semiconductor fingerprint sensor, ultrasonic fingerprint scanning
I. Optical identification technology
Fingerprint acquisition with the help of optical technology is the oldest and most widely used technology. The finger is placed on the optical lens, and the finger is illuminated by the built-in light source and projected on the charge-coupled device (CCD) with a prism, thus forming a digital, multi-grayscale fingerprint image with black ridges (lines of a certain width and direction in the fingerprint image) and white valleys (depressions between lines) that can be processed by the fingerprint device algorithm.
Optical fingerprint capture technology has obvious advantages: it has been tested for a long time, it is somewhat adapted to temperature variation, it can reach a high resolution of 500 DPI, etc., and above all it is inexpensive. There are also obvious disadvantages: it requires a sufficiently large size because it requires a long enough light range, and excessively dry and greasy fingers will also make optical fingerprint products less effective.
Optical fingerprint sensing limitations are reflected in the potential fingerprints (potential fingerprints are left after the finger is pressed on the table plate), which will not only reduce the quality of the fingerprint image, but may also lead to overlapping of 2 fingerprints in serious cases, and obviously, it is difficult to meet the needs of practical applications. In addition, the table plate coating and CCD array will produce loss over time, which may lead to the degradation of the quality of the collected fingerprint images. However, it has disadvantages such as inability to perform live fingerprint identification and poor applicability to dry and wet fingers.
Optical fingerprint identification system can only scan the surface of finger skin or scan to the dead skin layer but not deep into the dermis because the light cannot penetrate the skin surface (dead skin layer). In this case, the cleanliness of the finger surface directly affects the effect of recognition. If, the user's finger has more dust stuck on it, there may be a situation that recognition is wrong. And, if people follow the finger, make a fingerprint hand model, also may pass the recognition system, for the user, the use is not very safe and stable.
Second, the temperature difference induction recognition technology
Temperature difference induction recognition technology is based on the principle of temperature sensing and made, each pixel is equivalent to a miniaturized charge sensor, used to sense the temperature difference between the finger and the chip image area at a certain point, generating an electrical signal representing the image information.
Its advantage is that the fingerprint image can be acquired within 0.1s, and the sensor size and area are minimal, i.e. the technology is used in what is now commonly referred to as the sliding fingerprint reader. The disadvantage is: subject to the temperature limitation, a long time, the finger and the chip is at the same temperature.
Third, the semiconductor silicon sense technology (capacitive identification technology)
In the late 1990s, based on the semiconductor silicon capacitive effect of the technology tends to mature. The silicon sensor becomes one pole plate of capacitance, and the finger is the other pole plate. Using the capacitance difference between the crest of the finger stripe and the valley relative to the smooth silicon sensor, an 8bit grayscale image is formed.
The capacitive sensor emits an electronic signal, which will pass through the surface and dead skin layer of the finger and reach directly to the living layer (dermis) of the finger skin to read the fingerprint pattern directly. Since it penetrates deep into the dermis, the sensor is able to capture more real data and is less susceptible to finger surface dust and dirt, improving recognition accuracy and effectively preventing recognition errors. Semiconductor fingerprint sensors include semiconductor pressure-sensitive sensors, semiconductor temperature-sensing sensors, etc. Among them, the most widely used is the semiconductor capacitive fingerprint sensor.
The semiconductor capacitive sensor determines what position is a crest and what position is a valley based on the difference in capacitance value formed by the crest and valley of the fingerprint and the semiconductor capacitive sensing particle. The process works by pre-charging the capacitive sensing particles on each pixel point to a certain reference voltage.
When the finger touches the semiconductor capacitive fingerprint display, because the crest is convex and the valley is concave, different capacitance values are formed at the crest and valley according to the relationship between capacitance value and distance. Then the discharge current is used to discharge. Because the capacitance values corresponding to the crest and the valley are different, their discharge rates are also different.
Pixels under the crest (high capacitance) discharge more slowly, while pixels under the valley (low capacitance) discharge more quickly. Depending on the difference in the discharge rate, the location of the crest and the valley can be detected, resulting in fingerprint image data.
Unlike optical devices that mostly use manual adjustments to improve image quality, capacitive sensors use automatic control techniques to adjust fingerprint image pixels as well as fingerprint local range sensitivity to generate high-quality images in different environments in combination with feedback information. By providing local adjustment capability, even poorly contrasted images (e.g., areas of light finger pressure) can be effectively detected, and the sensitivity of these pixels is increased at the moment of capture to produce a high quality fingerprint image.
The advantages of semiconductor capacitive fingerprint sensors are better image quality, generally distortion-free, small size, and easy integration into various devices. The electronic signal it emits will cross the surface and dead skin layer of the finger to reach the living layer (dermis) of the finger skin and read the fingerprint pattern directly, thus greatly improving the security of the system.
The most important advantage of semiconductor silicon sensing technology is the ability to reach live fingerprint recognition. It is also possible to obtain better image quality on a smaller surface than optical technology, obtaining a resolution of 200-300 lines on a 1cm x 1.5cm surface (the smaller surface also leads to a reduction in cost and the ability to be integrated into smaller devices). Small size, low cost, high imaging accuracy, and very little power consumption, so it is very suitable for use in security and high-grade consumer electronics, known as the second generation of fingerprint identification technology after the optical.
Four, ultrasonic identification technology
Ultrasonic fingerprint collection is a new technology, its principle is the use of ultrasound has the ability to penetrate the material, and with the different materials to produce different sizes of the echo (ultrasound reaches the surface of different materials, is absorbed, penetration and reflection of the degree of difference). Therefore, by using the difference in impedance between skin and air to acoustic waves, it is possible to distinguish the location of the fingerprint ridge from the location of the fingerprint ridge.
The ultrasound frequency used in ultrasound technology is 1×104Hz-1×109Hz, and the energy is controlled to be non-destructive to the body (the same intensity as medical diagnosis). Ultrasonic technology products can achieve the best accuracy, it requires less cleanliness of the finger and plane, but its acquisition time will be significantly longer than the two aforementioned products, and it is expensive and does not achieve in vivo fingerprint identification, so it is currently used sparsely.
Micro-optical fingerprint recognition technology
The current mainstream - capacitive fingerprint recognition sensor, or the newcomer - ultrasonic fingerprint recognition sensor, both need additional fingerprint sensors, only the former need to open holes in the screen, the latter can be hidden under the screen only.
Can I get a free biometric fingerprint reader?
Of course you can, HFSecurity can provide fingerprint scanner with different interface, different function and different fingerprint size, if you need, you can send us your specification request, we will serve you as soon as possible.
How do I install the Biometric Fingerprint Scanner App?
To install the Biometric Fingerprint Scanner App, you only need three steps
Step 1: Find the APK you need from Google Market/app store/APK. download
Step 2: Install the downloaded APK on the device you need to use, some devices need security permissions, storage permissions, follow the prompts to operate
Step 3: Open the APK to connect and test if the installation is successful
How to reset the biometric fingerprint scanner device
Here is the general storage knowledge of the fingerprint scanner industry, generally our fingerprint data are stored in the upper computer, the fingerprint scanner device itself is not stored data
So when we want to reset the device, determine whether your fingerprint scanner is USB type or Bluetooth type, USB type fingerprint scanner if you need to reset just need to unplug the USB interface.
The Bluetooth type fingerprint scanner can be reset by using the on/off button.
What files are needed for the secondary development of biometric fingerprint scanner