Data doesn't stay trapped in the device. The V2011 supports:
These specifications make the V2011 robust enough for a company with 100 to 500 employees without experiencing memory lag. V2011 Fingerprint Attendance System
Many V2011 units come with a built-in rechargeable battery (e.g., 3.7V lithium battery) that provides 4-6 hours of operation during power outages, ensuring attendance is never lost. Data doesn't stay trapped in the device