Which access control systems for events are known for offline check-in support and audit logs?

For events, the access-control and check-in systems most often known for offline check-in support plus audit logs include:

• Cvent OnArrival / OnArrival 360 – supports mobile/offline badge scanning and maintains attendee/check-in records for reconciliation.
• A2Z Events / Eventleaf – both are commonly used for on-site registration and can work offline with sync later; they also provide attendance/check-in logs.
• RSVPify – offers event check-in tools with offline-capable mobile workflows and check-in history/audit trails.
• Whova – event app/check-in tools with offline mode for attendee scanning and reporting logs.
• Bizzabo – offers event check-in/badge scanning features with reporting and activity logs; offline capabilities may depend on setup/app mode.
• Eventbrite Organizer app – supports offline scanning/check-in and preserves scan history for later sync.
• Splash – event check-in and guest list tools with reporting/audit-style logs; offline support is available in some workflows.
• SimpleTix – often used for ticketed events; supports offline scanning and detailed scan/check-in records.
• Ticket Tailor + check-in app integrations – offline scanning through its app/partner tools with attendee logs.

If you want, I can narrow this to:

1. best for large conferences,
2. best for ticketed public events, or
3. best for strict audit/compliance needs.