1. How to download fingerprint templates from computer to fingerprint device? What is the downloading     speed?

1.1 Via Management Software, download fingerprint enrolled at computer to fingerprint device. Need to use    with USB fingerprint enrolment device.
1.2 Connect fingerprint readers and other controllers on a RS-485 line; configure it to have different ID or    connect fingerprint reader via wiegand to controller.
1.3 The below stated controller can be connect via RS-485 line to fingerprint controller or fingerprint time    clock or fingerprint reader to enabled computer to download fingerprint templates via controller to    fingerprint device.
   When using Door Access System adding fingerprint device, the fingerprint device has to be added as child    device to controller.
   The mentioned controllers are: SK200/400, SK100-NT, SK200/400-NT, SK800, SK100-NT-F, SKTES.
1.4 500 fingerprint templates need 5 min to transfer from computer to fingerprint reader.

2. How to store fingerprint templates to a card?

Smartkey fingerprint support fingerprint templates to be stored in Mifare Card. Each card can store 2 fingerprint templates. When card is flashed on the reader, the reader will retrieve templates stores in card to do matching. Benefits of using this method are…

2.1. Number of users no longer restricted by number of templates allowed in the fingerprint reader.    (Fingerprint reader holds only maximum 1,900 templates), now user can increase to 10,000 people.
2.2. Implemented 1:1 matching method therefore had increase matching speed.
2.3. Decrease error rate, thereby enhancing system safety.

There are 2 methods to write fingerprint templates to Mifare card.
     1. Connect Mifare RS-232 read/write reader to computer and transfer templates using management           software.
     2. Write directly to card from fingerprint reader.

3. How to increase fingerprint matching speed?

3.1. Using 1:1 matching method e.g. card + fingerprint or ID + fingerprint.
3.2. Adjust matching mode. There are 6 modes for selection. Default is set to 1. The bigger the number, the    faster the matching speed is but FAR (False Acceptance Rate) will increase.

4. What to do if staff's fingerprint quality is bad?

4.1. Enroll more finger as backup. When one fingerprint quality is not good, user still got backup finger to use.    Each user can enroll up to 10 fingers.

4.2. Choose to use Card + PIN for access or time check. During enrolment, select not to have fingerprint for    access. To avoid card being abused, can also implement to have picture taken during flash card. All the    network based access controller and time clock device support camera feature.

5. One computer can connect how many fingerprint reader?

Fingerprint device connect with computer via RS-485 communication. I master connection can connect up to maximum 32 unit fingerprint device. If require more than 32 units, can consider using RS-485 Hub as it can connect 4 master lines.

6. How to connect fingerprint reader to controller? How to initiate fingerprint templates downloading and     backup?

Fingerprint reader connects via wiegand to SK100/200/400/SKDC and SK100/200/400-NT controller. Even though it is equipped with a RS-485 interface but it cannot be used to connect to controllers. The RS-485 interface is use for connection with computer for template downloading purpose.

7. How to use fingerprint reader with SK800 controller?

When uses SK800 controller, fingerprint reader can directly connect to SKDC Door Controller. When require downloading fingerprint from computer then RS-485 connector on reader has to be connect to SK800 controller’s RS-485 connector.

8. Can optical fingerprint devices be installed in outdoor environment?

Under normal circumstances, optical fingerprint reader should be installed indoor as outdoor lighting will affect its work performance. If installed outdoor, change the setting on the fingerprint reader "Finger Menu>>>Parameters>>>Light Condition" set it to (Outdoor). Smartkey fingerprint device can be used in -20 degree outdoor environment but then will get slowness on LCD display and also will decrease the communication speed with computer though will not affect fingerprint matching and data storage.
Download Low Temperature Test Photo

9. What is the pro and con of CMOS fingerprint device?

9.1 Greatest advantage is it uses life fingerprint technology and has very high discrimination towards fake    fingerprint. Fingerprint collection and matching speed is faster compare to optical sensor.

9.2 Disadvantage is it is sensitive to low temperature; not suitable to use at north region cooler environment.    And also the need of direct contact with sensor and easily scratch the sensor surface hence shorten sensor    life span.

9.3 3. Recommend using optical sensor on busy district or for time attendance which does not enforce high    security. If tight security is a must like prison or bank, it is better to use CMOS sensor.

9.4 CMOS fingerprint sensor does not support auto scanning function. Have to press [#] each time to trigger    scanning.

10. What to do if require larger fingerprint storage capacity?

Smartkey normally producing fingerprint device that holds 1,900 templates at the same time can also provide capacity that holds 9,500 templates but 2 have to order 2 weeks in advance.
9,500 capacity fingerprint device perform exactly like 1,900 capacity device. It doesn’t get affected when the capacity increase, the matching speed, FAR and FRR rate remains.

11. Several technical indicators that will cause performance impact to fingerprint device.

11.1. False Rejection Rate and False Acceptance Rate
False Rejection Rate (FRR) means incorrectly reject an access attempt by an authorized user. A system’s FRR typically is stated as the ratio of the number of false rejections divided by the number of identification attempts.
False Acceptance Rate (FAR) means incorrectly accept an access attempt by an unauthorized user. A system’s FAR typically is stated as the ratio of the number of false acceptances divided by the number of identification attempts.

11.2. Error Registration Rate
Error Registration Rate (ERR) is used to describe the adaptability of fingerprint device. ERR referring to the probability fingerprint equipment not able to register and manage fingerprint. The higher ERR the more it will affect the use of the equipment.

11.3. Speed
Fingerprint Identification System operation speed mainly indicates by acquisition, image processing, matching time and average identifying speed.

11.4. 1:1 (One-to-One) & 1:N (One to Many)
There are 2 typical matching methods a Fingerprint Identification System has: Verification and Identification.
Verification mode is acquired fingerprint and performing a 1:1 match against sets of fingerprint specimen. Identification is performing a 1:N matching against stored templates. 1:1 match is more suitable at civil occasion whereas 1:N is in the field of criminal investigation.

12. What is the practical expect from downloading fingerprint from network fingerprint controller to     fingerprint reader?

Require fingerprint recognition on a door during entry and exit.