Complete Barcode Billing and Scanner Setup Guide for Small Shops

A product barcode is an identifier, not the product record itself. DukaanAdda stores the code with the inventory item. During billing, the scanner returns a raw value and the app looks for one active, non-deleted product whose stored barcode exactly matches that value.

The matched product supplies its saved name, unit, selling price, tax configuration, version and inventory identity to the bill. This is why scanning should be treated as a shortcut to trusted inventory data—not a replacement for maintaining it.

• Product name is clear and not duplicated unnecessarily.
• Barcode is saved exactly as printed, including leading zeroes.
• Selling price and unit are correct before counter use.
• GST applicability and rate are configured for GST billing.
• Current stock and minimum-stock alert are maintained.
• The product remains active and available for billing.

Barcode is optional on the product form, so you can start with products that already carry a manufacturer code and add the rest later. Do not invent a value casually. If your shop uses internal codes, follow one documented pattern and avoid reusing a code after a product is discontinued.

DukaanAdda also supports product search by name, SKU, barcode and brand. This remains an important fallback when a label is damaged or a product does not have a barcode.

1. 1

   Open Add Product

   Go to Inventory and create a product. Complete the name, category, unit, purchase price, selling price, stock and tax fields that your billing workflow needs.
2. 2

   Open the barcode scanner

   In the optional Barcode field, use the scanner action. On Android, allow camera permission and point at the code. You can switch the camera, enable the torch or move to manual entry.
3. 3

   Confirm the captured value

   Compare the saved value with the human-readable code printed below the bars. Preserve leading zeroes and do not add spaces before or after the code.
4. 4

   Save online

   Creating and updating products currently requires internet access. At save time, DukaanAdda checks whether another active product already uses the same barcode.

1. 1

   Clean the camera and label

   Wipe the camera lens and flatten the product label when possible. Use even light without a sharp reflection across the bars.
2. 2

   Allow camera permission

   DukaanAdda requests camera access when the scanner opens. If permission is permanently denied, use Open Settings and enable Camera for the app.
3. 3

   Align one code in the frame

   Hold the phone steady and place the entire barcode inside the scanning frame. Avoid showing a nearby payment QR or a second product label at the same time.
4. 4

   Use the scanner controls

   Turn on the torch in low light or switch between available cameras. If the camera still struggles, choose Enter Barcode Manually and type the printed code.

The scanner accepts the first non-empty detected raw value and closes. This makes the flow fast, but it also means the operator should keep only the intended code inside the frame.

Fast Bill is designed for quick counter entry. The empty state offers search, barcode scan and manual-item options. On Android, tap the barcode/scan icon near the Fast Bill heading, scan the product and wait for it to appear before moving to the next item.

Fast Bill

Scan, verify, then continue

A successful scan adds the matched inventory product. Check its name, price, quantity and stock warning before scanning the next label. Use Save & Print only after payment mode and bill totals are correct.

If no product matches, Fast Bill shows “Product not found for this barcode.” Search by name or SKU to confirm whether the product exists, then correct or add its barcode from Inventory.

The full Create Invoice screen uses the same product-barcode lookup. Depending on the screen layout, its scanner button is labelled Scan QR, but the action opens the shared product barcode scanner and passes the result to product lookup.

Use the detailed invoice workflow when you need fuller customer, delivery, payment, tax or invoice information. Barcode scanning only changes how the product is selected; the rest of the invoice still needs review.

DukaanAdda identifies an existing bill line by product ID. When the scanned product is already present, another scan increases its quantity by one. It does not create a second row for the same inventory product.

For multiple identical units, repeated scanning can be convenient. For a large quantity, use the quantity control and verify available stock instead of scanning dozens of times.

The current shared scanner flow uses live camera scanning on Android and iOS targets. On Windows, pressing the Scan action opens a manual-entry dialog with a focused barcode field. Type or paste the value and submit it for exact product lookup.

A keyboard-wedge scanner behaves like a keyboard and may type into the focused manual field. If it appends Enter, the dialog may submit through the field's done action. This is device-dependent behaviour, not a guaranteed dedicated integration. Test the exact scanner before designing a busy Windows counter around it.

When the device is offline, the inventory repository searches locally cached products and returns a product only when its stored barcode exactly equals the scanned value. This can keep familiar products discoverable when connectivity drops.

Before a high-volume offline period, open and sync the relevant inventory while online. Reconnect and sync after billing so product, stock and sales records can be reconciled.

Scanning selects the product record; it does not freeze or invent commercial values. Fast Bill takes the saved selling price and unit. In GST mode it applies the product's tax applicability and configured rate, using the business default where the product is taxable but its rate is zero.

Fast Bill prevents final save when one or more tracked items do not have sufficient stock. It can also surface a low-stock warning. Correct the quantity or stock record instead of bypassing the product with a manual item, because manual items are not stock-tracked.

Keep a small exception list at the counter: unlabelled products, damaged labels, new products and codes that failed lookup. Correct those records after the rush instead of repeatedly typing the same product every day.

These boundaries matter when choosing counter hardware. For an Android-first shop, the built-in camera scanner and manual fallback are the verified path. For a Windows counter that depends on rapid handheld scanning, test the exact keyboard behaviour before purchase or submit a feature request for a dedicated scanner workflow.