There is already a biometric lock option for Webex mobile, however no biometric login option. The lock option only works if the application is kept open and locked in the background. Once the application is closed it logs the user out, which this option would not encompass.
The ask would be when a user is completely logged out of the app, they would be able to use biometrics to login, without having to enter any additional login information. Initial email entry would most likely be needed to locate the org, but this would be to avoid having to enter a PW or enter SSO login information (if utilizing that setup). An example application that our company uses that utilizes this option is Workday (with OKTA SSO). This app has an option allowing full login through biometrics and looking for a similar feature on Webex.