A POS (point of sale) system is the software and hardware a business uses to process a sale: recording what was sold, accepting payment, and updating stock. Unlike a basic cash register, a modern POS also tracks inventory in real time, accepts multiple payment methods like M-Pesa and card, and generates sales reports, usually running on a tablet, phone, or computer rather than dedicated register hardware.
Breaking down "point of sale"
The "point of sale" is simply the moment and place where a customer completes a purchase: the till, the counter, the checkout screen. A POS system is whatever software and hardware handles that moment: ringing up items, calculating the total, accepting payment, and printing or sending a receipt.
How a POS differs from a cash register
A traditional cash register does one thing: it records cash in and out and stores it securely. It doesn't know what you sold, how much stock you have left, or how to accept a card or mobile money payment. A modern POS system does all of that. It's connected software that treats a sale as a data event, not just a cash movement.
| Cash Register | POS System | |
|---|---|---|
| Records cash | Yes | Yes |
| Tracks inventory | No | Yes |
| Accepts M-Pesa / card | No | Yes |
| Sales reports | No | Yes |
| Multiple staff logins | Rarely | Yes |
What a POS system actually does day to day
Processing the sale itself
At checkout, a cashier adds items to a cart (often by scanning a barcode), the system calculates the total including any tax or discount, and the customer pays by cash, card, or mobile money like M-Pesa.
Keeping stock accurate automatically
Every sale should deduct from your recorded stock count automatically, so you always know what you actually have on the shelf without a manual stocktake to find out.
Turning sales into decisions
Beyond the transaction itself, a POS system accumulates data, what sold, when, to whom, by which staff member, that turns into reports you can actually use to make decisions about what to reorder, when to run a promotion, or which staff member is performing well.
Cloud POS vs a system installed on one machine
Older POS systems ran entirely on local hardware in one location, with data stored only on that machine. A cloud-based POS stores data on remote servers instead, so you can check sales from your phone while away from the shop, and the system stays current without manual software installations. Some cloud POS systems, including WebpinnPOS, also include an offline mode that keeps the till working through a connectivity drop and syncs once you're back online: combining cloud convenience with resilience against Kenya's occasionally patchy internet.
For a deeper comparison, see: Cloud POS vs Traditional POS: Which Is Better for Kenyan Businesses?
Frequently asked questions
See the current WebpinnPOS plans and prices, or compare costs across the market in our POS system cost guide.
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