Writes lock event (manual/idle/ceiling) with duration computed from
the open unlock event. Then logout + re-authenticate as kiosk via
the password stored in ir.config_parameter['fp.tablet.kiosk_password'].
Falls back to 'needs_kiosk_relogin' if the kiosk password is missing
(sysadmin must log in manually). Logs every event for forensic
review.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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