This is an option for additional security within Stride and can be set up within the Settings tab:
Please keep in mind, the user must have the "Site Administrator" permission turned on to be able to access this setting and turn it on for the practice.
(MFA) Multi-Factor Authentication:
If you want to turn on two-factor authentication you will need to download the Google Authenticator app from the App Store or Google Play. Here's a short video on how to set up your two-factor authentication: