Front door lock with fingerprint reader

Biometric authentication is at the heart of the electronic fingerprint lock. The human rights to access the premises are confirmed by a personal pattern on the fingertips. Locks with similar characteristics are distinguished by a high level of secrecy and burglary resistance, in addition to verification of impressions. Locking devices eliminate the need to carry keys, but there are models that use them in parallel with prints.

How the fingerprint lock works

Several fingerprints can be stored in the lock memory

The mechanism has almost no errors in operation. Biometric constipation analyzes complex structures and finds compliance with a given parameter. There are options for modules where several prints of different family members are set at once.

Features of work:

  • the lock is connected to a stationary power supply or batteries are used;
  • works with prints or opens in parallel with a key.

The electric lock has no holes in the box, the touch screen can withstand significant loads. The accuracy of impression perception may be impaired if the pad is damaged (abrasion, cut).

Varieties of locks

Biometric identification uses the individual characteristics of the owner and is effective when compared to other types of control. Some models have built-in sensor devices for signaling about the opening of the curtain, equipped with backlighting, sound siren. They have a charging indicator with audible notification.

The cost is influenced by additional levels of protection, for example, from impacts, to increase secrecy. The price depends on the number of prints that are programmed into memory. There are designs with up to 200 print options memorized.

Mounted models are convenient in that they can be used in different places if necessary. The key to such constructions is easily selected; code variants require memorizing numbers and letters. Fingerprint recognition technologies are a new direction, and they are being improved every year.

On the front side there is a touch detector and an indicator with the ability to recognize 3 colors. The print is left on the glossy panel. The device is powered by a built-in battery, the charge of which is enough for 2500 openings and closings.

Mortise autonomous

Fingerprint Mortise Lock

Opening at the entrance requires the imposition of a fingerprint, and at the exit simply press the handle. Mechanical keys are usually used for emergency unlocking. Some models are equipped with a memory block for recording the time and the number of passes through the entrance. The data is viewed on a computer monitor via the USB interface.

There is a print detector on the external panel, and a screened input for digital programming is provided. The internal structure includes a microcontroller where the templates are recorded. The main part of the lock cuts into the door leaf, and the device is powered by batteries or connected to the network.

Overhead autonomous

Such locks contain an invoice section, and the mortise and internal parts are combined in one box. On the back surface there is an opening button and a blocking element after entering the room.In some models, door handles are installed separately.

Overhead options are easier to mount, because do not require making a cavity in the canvas. Holes are drilled, bolts are installed in them to connect the front and inner parts.

Biometric patch pen

Surface mounted biometric lock

Such an element on the door is used in addition to the existing mechanical lock. The handle controls the tongue of a conventional lock. The user turns the handle after successful fingerprint recognition, while the latch is pulled into the hole and the door opens.

The handle has an outer side with a scanner, there are models with a keyboard for setting the code, on the bottom side there is a fingerprint storage unit and a module for connecting to electricity or a battery capacity.

Anti-burglary bolt locks

An electric valve acts as a closing element. Such designs are performed in the option of opening with a key, code or fingerprint. The individual pattern is checked only at the entrance, from the inside the door opens freely.

Locks are integrated into the “smart home” system, but they can function autonomously. To close, the handle turns upward or the door simply slams on the latch without the involvement of the handle.

Biometric locks built into the doorknob

The lock is built into the door handle

The fingerprint scanner is located in the handle of the lock, the finger is brought to the detector when gripping the rotary element. The biometric device includes a fingerprint detector and a control device. The common box contains a TET or LCD screen and buttons for setting the program.

Offline memory stores sample impressions and records pressing times. Some models are equipped with an exit key, a door detector, an audible signal, a bell and an interface for wireless transmission of records.

Characteristics and features

After opening, the lock is automatically locked after a specified period of time, usually it is 10 - 600 seconds.

The quality of work is assessed using specially developed parameters:

  • FRR shows the possibility of failure of constipation upon presentation of the owner's fingerprint;
  • FAR characterizes the probability of opening when reading an unfamiliar print.

The error is tenths of a percent for both schemes, but statistics say that locks often do not let the owner in than let strangers in.

Connection and configuration

Installation diagram

The electronic lock can be placed anywhere on the door. Installation and connection is done by a specialist with the appropriate qualifications. Batteries must be of high quality with appropriate technical properties.

Do not use a fingerprint door lock if there are traces of electrolyte leaking in the battery compartment. If there is no mechanical opening from the inside, you must not close people in the room.

Pros and cons of fingerprint locks

Opening occurs only by touching the sensor, which makes use much more convenient than entering a code or turning a key. Locks with connection to the power supply line are energy saving and do not increase material costs. The device works in heat, protected from moisture.

The disadvantages include the fact that locks require electricity and it is not always possible to connect them to a fixed line. Batteries fail and a supply of cells is required to replace the battery if necessary. Electronic modules almost do not work in frost, and to apply a finger, you must first wash off the dirt from it.

Popular manufacturers

Samsung SDS makes door locks for various types of doors and guarantees the safety of the owner. The structures are easy to install and operate, they are mounted on left-hand and right-hand inlet blocks.

The manufacturer H-Gang Guardian combines progressive developments and produces fully functional designs with high quality performance.Installed on a door leaf made of any material.

The manufacturer of the Selock Hotel brand produces quality products that use wireless technologies in their work. The user controls the work, changes the settings in the absence of his own home, looks through the photos of visitors, remotely controls the opening.

The Titan company produces different models, among which there are locks with an external sensor installed separately from the lock. The designs provide for a dual power supply circuit with a transition to a backup battery at the end of the charge of the main element.
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