After you set an access code, you may opt to protect access on a parent's device by using a fingerprint. Kaspersky Safe Kids uses the same fingerprints you add in your device settings. So, if you haven't used fingerprint scanning before, you will be redirected to your device settings.
Before you start using a fingerprint unlock, you should enter the access code.
You can add a fingerprint in the setup wizard or in Additional > Authorization .Page top