Access Control Biometrics readers are used in higher security areas where the cardholder’s own biometric information is also used to confirm they are allowed access through the door
Access Control Biometrics readers are also widely used in time and attendance applications to confirm the correct member of staff is clocking in / out
There are a number of manufacturers who produce biometric readers and these readers use different biometric information
fingerprint is a very popular form of biometric reader but Facial, Iris, Hand and Vein recognition readers are also in use today
With any biometric reader the cardholder’s biometric template, must be stored either within the access control card (1 :1 ) or within the reader (1 IN)
N= Numberi.e 1:2, 1:3
Biometric – Any measurable, unique physiological characteristic or personal trait used as a credential
(e.g. fingerprint, hand or face geometry, retinal/eye. face, voice, signature or keyboarding dynamics)
In the case of the biometric template being stored within the access control card this is known as One to One (1 :1) or Biometric Verification
The user will present their access control card to the biometric reader, th reader will then read from the access control card the stored badge number and the biometric template
The user will then be directed by the reader to present their biometric identification. Once the reader has read the persons biometric identification, it compares the captured information against the biometric template that was read from the cardholders card. if the two biometric identifications match, the cardholder’s badge number is passed from the reader into the access control system where the decision is then further made to open the door
As the One to One (1 :1 ) Verification method relies on the cardholder carrying their own biometric template, the access control card must support the storing of data within itself
The One to One (1 :1 ) verification method can be triggered by the use of a unique PIN code that is entered into a keypad on the biometric reader
Once the unique PIN code is entered and the biometric information is captured from the person. the biometric reader compares captured biometric information against the template stored against the PIN number to check for a match. lf a match is confirmed then the PIN number is passed through to the access control system where a decision is made to open the door
The are numerous advantages to the One to One (1 :1 ) Verification method these include
A fast operation time as the reader does not need to find the person biometric template
As the cardholder is carrying their own biometric template, the readers do not need any form of communication connection to the security system