Tablet-based point of sale systems explained

A tablet runs POS software on a general device you probably already own, like an iPad, an Android tablet or a Windows tablet. These tablets weren't specifically built for checkout but can run POS software through an app. A dedicated POS terminal is built only for checkout.

Practically, a dedicated terminal has a screen, processor and ports designed to survive all day in a shop. A tablet has those things too, but they're designed for general use, so checkout is just one app running alongside everything else.

They differ primarily on:

Hardware origin. A dedicated terminal is purpose-built for POS. A tablet is a general-purpose device running POS as one of its applications.

Screen and interface. Tablets offer a familiar touchscreen that most staff already know how to use. Dedicated terminals may have larger, brighter or more robust screens designed for extended commercial viewing angles.

Accessories. A dedicated terminal often includes built-in ports for printers, scanners and cash drawers. A tablet usually connects to accessories over Bluetooth or through a dock, which adds setup steps and more points where a connection can drop.

Durability. A dedicated terminal is typically built for spills, heat, dust and daily handling. A consumer tablet may need a protective case, a secure mount and more careful treatment.

Cost. A consumer tablet is often less expensive than a dedicated terminal. What the whole setup costs depends on accessories, mounts, cases and whether you already own a compatible tablet.

A tablet-based POS setup has three components: the tablet, the POS software it runs on, and the accessories it’s connected to.

• The tablet provides the screen, the processor and the operating system.

• The POS software, installed as an app or opened in a browser, runs the checkout, manages your products and stores or synchronises your sales records.

• Connected accessories handle what the tablet can't do on its own: taking card payments, printing receipts, scanning barcodes, storing cash and holding the device securely.

The tablet displays the checkout interface. Your staff select products, build the sale and record the payment method on it. When a card payment is needed, the tablet may send the amount to a connected card machine. When a receipt is needed, it may send a print job to a connected printer.

Think of it like this: The tablet is the screen - and the brain. The accessories are the hands. The POS software is the instructions that connect both, allowing them to talk to each other.

A tablet-based POS can cost less to start and uses a screen your staff already know. A dedicated terminal is built tougher, carrying more hardware inside it - and it usually comes from one supplier.

A tablet-based POS suits you if you want a lower-cost entry point than a dedicated terminal, your catalogue and checkout are straightforward, and you don't need a device built for rough handling. It is worth considering when:

• You want to spend less up front than a dedicated terminal costs.

• Your staff are already comfortable with touchscreen tablets.

• Your product catalogue, order flow and checkout are straightforward enough for a standard tablet screen.

• You already own a compatible tablet.

• Portability is useful to you, and you can do without built-in card acceptance and a built-in printer.

• You are testing POS software before committing to dedicated hardware.

A tablet-based POS is less likely to suit you if you trade somewhere harsh (in dusty, hot, wet conditions, or expect daily knocks and drops) and need a device built for it, or if your checkout needs a bigger screen or built-in peripherals. The same applies if the tablet's operating system is too old or no longer supported, or if you want one provider answerable for both the hardware and the software.

Not every tablet can run every POS app, so check the operating system version, the screen size, the supported model list and accessory compatibility before you buy or repurpose one.

1. The operating system and version. The POS provider should state which OS versions it supports, for example iOS 16+ or Android 12+. An older tablet may stop receiving updates and lose compatibility.

2. The screen size. Some POS apps need a minimum screen size to show the full interface, and a 7-inch tablet may not show the same layout as a 10-inch one.

3. The supported tablet models. Some providers certify specific models and others support any device that meets the OS and screen requirements. Ask for a confirmed list.

4. The accessory compatibility. Confirm the tablet connects to the specific card machine, printer, scanner and cash drawer you need, because Bluetooth, USB-C and Lightning ports aren't all interchangeable.

5. The battery life. A tablet used as a POS all day may drain faster than one used casually, so test how long it lasts with the screen on and Bluetooth active. Load shedding makes this check matter, because the tablet has to run on its own battery until the power comes back.

6. The mount or stand. A tablet at a counter needs a secure mount, or it can be knocked over, taken, or moved into a position that makes checkout awkward.

7. How long the tablet's OS will keep getting updates. Manufacturers eventually stop updating older models, and when that happens the POS app may drop support for the device too. Ask how long the tablet is expected to receive updates.

A tablet-based POS needs a card machine, a receipt printer, a barcode scanner, a cash drawer, a stand, a protective case and a reliable charging point, depending on what you sell and how you take payments.

Each accessory adds a connection, a power requirement and a potential point of failure. A tablet with three Bluetooth accessories and a USB printer is a more complex setup than it first appears. Test every connection under realistic conditions before relying on it during trading.

For more on POS accessories, read POS hardware explained.

A commercial POS tablet is built for checkout duty, and a consumer tablet (an off-the-shelf, general-purpose tablet made for everyday personal use) is cheaper, easier to buy and often enough for a simple counter with lower volume. Some manufacturers sell tablets specifically for POS use, and those tablets may offer:

• Stronger build quality, drop-tested and splash-resistant.

• Brighter screens for shop lighting.

• Built-in ports for printers, scanners or payment devices.

• Longer product support and OS update cycles.

• Mounting points designed for counter stands.

What any one tablet built for checkout includes varies by provider and by plan, so check the specification of the model in front of you rather than assuming the list applies. A consumer tablet (a standard iPad or Samsung Galaxy Tab) is cheaper and easier to buy. It may suit you if your checkout volume is lower, your catalogue is simple and your counter is a protected spot. Weigh the saving on hardware against durability, accessory connectivity and how long the device stays supported.

The common mistakes are assuming any tablet will work, ignoring accessory compatibility, forgetting that OS support ends, using the tablet for other things, skipping the mount, underestimating battery drain and splitting support across too many suppliers.

Assuming any tablet will work. POS apps have specific OS, version and screen requirements, so an old tablet gathering dust in a drawer may not qualify and you should check before you assume it will work.

Ignoring accessory compatibility. A Bluetooth printer that works with one POS app may not work with another, so confirm every accessory connection before you buy.

Forgetting about OS updates. When the tablet manufacturer stops updating the device, the POS app may eventually drop support too, so budget for a replacement before that day arrives.

Using the tablet for other tasks. A tablet used for browsing, social media or personal use alongside checkout creates distractions, slows the queue and raises the risk of software conflicts or the app being closed by accident, so keep it off other tasks.

Skipping the mount. A tablet lying flat on a counter is hard to read, easy to knock over and difficult to secure, and a proper stand or enclosure costs less than replacing a broken screen.

Underestimating battery drain. A tablet running POS software with the screen on, Bluetooth active and a card machine connected uses more power than casual use, so all-day trading usually needs a permanent charge or a dock.

Splitting support across too many providers. When the tablet, the POS app, the card machine, the printer and the scanner each come from a different supplier, diagnosing one problem means contacting five, so check whether one provider can cover more of the setup.