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

# What is a point of sale (POS)?

> A POS processes every sale: it charges, prints the receipt, deducts inventory and keeps a record. What it does, what a modern one includes and when to get one.

A **point of sale** (POS) is the system that processes every sale in your business. It charges the customer, prints the receipt, deducts the item from inventory and keeps a record of the transaction so you can read it later.

In 2026 it is no longer a cash register with a drawer. It is software. It runs from any phone, tablet or computer browser, and ties together payments, products, customers and reports in one place.

## The 3 things a POS must solve

Any POS needs to do these three things well:

* **Charge fast.** Find the product, add to ticket, apply discounts or tips, charge and issue a receipt. If it takes more than 30 seconds per average customer, the POS is not doing its job.
* **Keep your inventory current.** Each sale deducts what the customer took. Without this, you sell what you no longer have and your margins fall apart.
* **Give you visibility.** Know what sold, how much hit the cash drawer, which product brings the most margin, when traffic peaks. Without this you are operating blind.

If a POS does not cover all three, it is just a register with a nicer interface.

## What a modern POS includes in 2026

Beyond checkout, a POS today includes:

| Feature                            | What it does                                                                            |
| ---------------------------------- | --------------------------------------------------------------------------------------- |
| **Multi-method payments**          | Cash, transfer, card via external terminal and tipping in a single flow                 |
| **Variants, modifiers and combos** | "Vanilla latte, large, with almond milk" without creating 40 separate products          |
| **Kitchen display (KDS)**          | Kitchen sees the order automatically, no paper, no shouting                             |
| **Multi-location**                 | Run several locations from a single catalog and consolidated reports                    |
| **Digital points card**            | Customers accumulate points in Apple Wallet or Google Pay and come back                 |
| **CFDI 4.0 invoicing**             | Invoice customers who request it, directly from the POS, no extra software              |
| **Real-time reports**              | Cash close, P\&L, margins and top products without manual spreadsheets                  |
| **AI assistant**                   | Ask in plain language "what sells best on Sundays?" and get an answer with real numbers |

## When you actually need a POS

* You process 10 or more tickets per day.
* You have employees who handle checkout (not just you).
* You move inventory (not pure services).
* You want to understand your business with data, not intuition.
* You want your customers to come back more often.

## When you do not need one yet

If you sell 3 things a day from home, a notebook and a calculator may be enough. A POS starts to pay off when:

* You spend time reconciling cash at end of day.
* You do not know whether product X is profitable or losing money.
* Your employees handle checkout and you cannot see how.
* Your customers are recurring but you have no way to reward them.

Before that, a free system or a notebook is fine.

## How to pick the right one

Four questions to avoid picking wrong:

1. **Does it run in the browser?** If it forces you to buy specific hardware (drawer, proprietary printer, branded terminal), you are overpaying.
2. **What commission per sale does it charge?** The right answer is zero. If they take a percentage of every transaction, the cost scales with your business.
3. **Does it include a digital points card?** Getting a new customer costs more than keeping one that already knows you. If your POS does not help you retain, it is missing a leg.
4. **Can you try it before paying?** Any serious POS lets you try for free. If they want an annual contract before you touch it, keep looking.

## Start your trial

El Nido hits all four: runs on any phone, tablet or computer, zero commissions, digital card included from the Free plan, 14-day full Business plan trial with no credit card.

<Card title="Try El Nido free for 14 days" icon="arrow-right" href="https://elnidopos.com">
  2-minute setup. No contract. No credit card.
</Card>