Frequently Asked Questions


What does BACS mean?
BACS is an acronym for ‘Biometric Access Control Systems’. These are CrucialTrak’s multi-mode biometric access readers. BACS readers are intelligent edge devices wich do all verification and authentication at the edge to allow for the fastest multifactor biometric authentication possible.
Can the BACS reader operate as a stand-alone unit?
Yes, while these devices can be the biometric readers in any integrated access control solution, BACS readers can also be used as a stand-alone system paired with CruAMS management software.
Where do I find firmware updates?
To conduct a firmware update of CrucialTrak BACS readers, you will need the BACS update tool and updated firmware of the device you wish to update. All items can be obtained from the CrucialTrak homepage’s Download Center.
What legacy access control systems do you integrate with?
BACS devices can be used with any legacy access control system via wiegand output. Iin addition we have direct integration with an ever growing list of ecopartners including:
- Kantech
- Genetec
- Lenel S2
- Honeywell
Can BACS readers be used under low light conditions?
The Iris, Fingerprint and Palm Vein recognition modules are not affected by low light conditions. Facial recognition requires a certain amount of light; however, the facial reader can automatically adjust the capturing settings and compensate for low light as well as counter light conditions, when there is light coming from behind the user. In addition, there is a lighting panel accessory available for BACS™ Duo and Duo-S to enhance facial recognition when the amount of light is otherwise limited.


What does CruAMS mean, and what is the function of CruAMS?
CrucialTrak Access Management System (CruAMS) is CrucialTrak’s integrated management software used to manage the BACS devices and biometric profiles.
Where do I install CruAMS?
CruAMS software can be installed on a Server, Virtual Machine or PC.
How many BACS readers can CruAMS handle?
Depending on network and server environments (assumed i7 CPU, 1 Gb Ethernet and MS SQL database) standard CruAMS (CrucialTrak Access Management System) installations can accommodate approximately 256 BACS readers.


How do I enroll users and capture biometric information?
CrucialTrak’s systems offer the flexibility to be able to enroll and capture profile information using either BACS readers, dedicated enrollment station, OR using mobile enrollment (face only) via smartphone.

Each biometric template is enrolled independently, which allows for certain users to skip specific modes if they are not available (e.g. fingerprint is not available due to a physical disability). The BACS unit will attempt to recognize all biometrics that are presented and will only authenticate those which are enrolled.
How many people can you enroll?
BACS readers can support up to 50K users depending on model and application.


Please explain the mechanism of authentication.
Each BACS reader can be configured to require up to four modes of biometrics depending on the reader. All biometric modalities attempt to recognize simultaneously and once the user has been recognized by the required number of modalities, the user is granted access.
Does user authentication occur at the reader or at the server?
The BACS readers can either work as stand-alone devices or with a centralized server. When the user enrolls their biometric information at either the reader or at dedicated enrollment station, the encrypted data is shared with CruAMS (server). CruAMS continuously shares and synchronizes the data with all other readers within the authorized group. When the user is recognized at a BACS reader, authentication takes place locally. Even if the connection between the devices and CruAMS was lost, authentication at each reader is available.
How many authentication modes does a BACS reader have?
This depends on the reader. For example, BACS™ Quattro has four biometric authentication modalities, BACS™ Duo, Duo-S, and Tube, as well as biometric door solutions Suite and SmartDoor have two biometric modalities, and Solo Palm has one biometric modality. Most readers also have the option to include a built-in RFID reader, and some units also have a QR reader or a PIN option.
What are the multi-credential verifying options?
Depending on the specific requirements of each facility, each reader can be configured to require recognition of a certain number of biometric modalities and/or the RFID readers that are connected to the readers.
Can you set authentication for two or more as a multi-person rule?
No, BACS readers do not support this feature (commonly known as "escort mode").
What is partial iris donut recognition?
The Iris module of BACS readers captures and analyses the "donut" pattern of the iris. Even if the user’s eyes are not wide open and the donut pattern is not fully visible, authentication is still possible.


What encryption do you utilize to protect the data?
AES 256
Does CrucialTrak's biometric access control system support European GDPR (General Data Protection Regulation)?
Yes. All biometric templates are securely saved using 3-step data protection and AES 256 data encryption. Also, the template enrollment supports an easier process for corporate users to get consent from each individual for using personal data.
Do you have an anti-passback function?
Yes. The anti-passback function requires that a specific sequence is used for the system to grant entry and/or exit at a specific location.