Appearance
Offline Mode
The POS keeps working when your internet connection drops. You can keep completing cash and card sales: they are saved on your device and sent to the server automatically when the connection returns.
Connection Status
The POS shows a clear status indicator:
- Green: Online, everything working normally
- Amber: Connection lost, operating in offline mode
No manual action needed. The switch is automatic.
What Works Offline
| Feature | Offline Support |
|---|---|
| Browse and search products | ✅ (from the saved catalogue) |
| Complete cash sales | ✅ (saved and synced later) |
| Complete card sales | ✅ (saved and synced later; the card itself is charged on your separate card machine) |
| Attach a customer | ❌ (customer search needs a connection) |
| Discounts | ❌ (need server validation) |
| Loyalty points and VIP discount | ❌ (need a customer and the server) |
| Store credit and exchange credit | ❌ (the balance or receipt must be checked online) |
Automatic Sync
When your internet returns, all offline sales are automatically sent to the server in the background. No manual action needed.
WARNING
Stock quantities shown during an offline session reflect stock at the time of the last successful sync. If other registers have been selling the same items while you are offline, it is possible to oversell. Any discrepancy is visible in the stock audit trail after sync.
FAQ
Q: Will I lose any data if the internet drops mid-sale?
A: No. Sales completed offline are saved on your device and synced when the connection returns.
Q: Can I take card payments offline?
A: Yes. ClarityPOS does not process the card itself: your separate card machine does that. The POS simply records that the sale was paid by card and saves it to sync later. Choose Card as normal. Cash and card are the two methods available offline; store credit, exchange credit, discounts, and loyalty need a connection.
Q: What prevents the same sale from being processed twice?
A: Each offline sale has a unique identifier. If the network drops after the server saves the sale, the retry is detected and marked as already-synced. No duplicate is created.
Q: What if I close the browser while offline?
A: Offline sales are stored in your browser's local database and survive a browser close. Reopen the POS and the queue syncs automatically.
Q: What if the same product is sold offline on this register and on another register at the same time?
A: This is an accepted trade-off. Both sales will go through. The cached stock figures may not reflect what other registers have sold. Any discrepancy will be visible in the stock audit trail after everything syncs.
Q: Why does my offline sale queue survive when I log out?
A: Clearing the queue on logout would permanently destroy sales that haven't reached the server yet. The queue is tied to your store, so a different staff member logging in on the same device cannot see or accidentally sync your queued sales.
Q: How is tax calculated on receipts printed offline?
A: Tax settings are saved on your device alongside the product catalogue. The offline receipt uses those saved values. Once the sale syncs, the system recalculates tax to make sure the final record is accurate.