Hi,

You cannot integrate a fingerprint device with Odoo Online (SaaS).

       -Odoo Online does not allow installing custom modules.

       - It runs on a restricted cloud infrastructure.

       - No way to interact with local networks or devices (like fingerprint machines).

       - Cannot run background services, daemons, or APIs.

You can integrate fingerprint machines with Odoo.sh or On-Premise Odoo.

You can use the following free module to integrate Odoo with biometric devices.

* https://apps.odoo.com/apps/modules/18.0/hr_zk_attendance

* https://apps.odoo.com/apps/modules/17.0/oh_hr_zk_attendance

Hope it helps

 https://apps.odoo.com/apps/modules/18.0/hr_zk_attendance
This is not installing. Does it work really?