---
title: Can we test where there is no internet connection?
description: After initial login, OPTOVERA can test offline using available User records. Measurements stay on the Device until a connection and sync return.
---

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# Can we test where there is no internet connection?

## After initial login, testing works offline; records upload once the Device synchronizes.

Yes, once the Device has completed its initial login. Username selection, PIN verification, iris recognition, measurement, baseline comparison, and result generation all run on the Device. The result appears on the Device, and the record is stored locally as a Pending measurement until the Device synchronizes.

While the Device is offline:

- results do not appear in the dashboard, reports, or cloud history;
- cloud-based alerts are not sent;
- the Device does not receive dashboard changes, such as new or disabled Users, group changes, or PIN resets.

There is no defined maximum offline period. Restore connectivity as soon as practical and confirm synchronization before a large backlog of Pending measurements builds up.

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