> ## Documentation Index
> Fetch the complete documentation index at: https://docs.billbasket.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Tracking serial numbers

> Track individual units of a BillBasket product by serial number from stock receipt through billing, warranty lookup, and returns — ideal for electronics.

For high-value items where every unit matters individually — phones, TVs,
appliances — BillBasket can track stock by serial number instead of just a
quantity count. Turn on **Track Serial Numbers** on a product (Products →
edit product), then BillBasket asks for each unit's serial number when you
receive stock, and lets you pick the exact unit being sold at billing time.

<Note>
  Serial tracking is only available for simple products (not services, and
  not products already tracked by batch).
</Note>

## See it on your device

<Tabs>
  <Tab title="Phone">
    <Frame>
      *Screenshot coming soon — Android phone view.*
    </Frame>
  </Tab>

  <Tab title="Tablet">
    <Frame>
      *Screenshot coming soon — Android tablet view.*
    </Frame>
  </Tab>

  <Tab title="Windows PC">
    <Frame>
      *Screenshot coming soon — Windows desktop view.*
    </Frame>
  </Tab>
</Tabs>

## Try it: Bali Electronics

<Steps>
  <Step title="Vikram turns on serial tracking">
    Vikram Bali, owner of **Bali Electronics**, edits his "Samsung Galaxy
    M14" product and switches on **Track Serial Numbers** so every phone can
    be identified individually.
  </Step>

  <Step title="Receiving stock from a supplier">
    When a new shipment of 10 phones arrives from his supplier, Vikram opens
    the purchase and enters each phone's IMEI/serial number one by one as he
    unpacks the box — 10 units, 10 serial numbers, all added to stock.
  </Step>

  <Step title="Selling one to a customer">
    His staff member Deepak bills a walk-in customer for one Galaxy M14. At
    the billing screen, BillBasket shows the list of in-stock serials for
    that phone — Deepak picks the exact unit being handed over, or scans its
    barcode/serial directly.
  </Step>

  <Step title="Handling a return by serial">
    A week later, that same customer returns the phone for a defect. Vikram
    looks up the sale and processes the return against that specific serial
    number, so stock and warranty records stay tied to the exact unit.
  </Step>
</Steps>