The driver is the part that expires

The mechanical parts of a scanner are simple: a lamp, a sensor, a motor, some rubber. Kept clean, they work for a long time. The part that fails first is not physical at all — it is the small piece of software that lets a computer talk to the device, and it fails when the operating system moves and nobody rewrites it. This is the single largest determinant of how long a scanner remains useful, and it appears nowhere in the specifications.

Why a working machine stops working

A scanner is a peripheral, which means it cannot do anything on its own initiative. Something on the computer has to tell it to start, receive the stream of image data, and turn that stream into a file. That translation layer is written against a particular operating system’s interfaces, and those interfaces change.

When they change, a device needs updated software. Whether it gets any is a commercial decision made years after you bought it, by a company weighing the cost of the work against sales of a product it no longer makes. The usual outcome for a discontinued model is that support stops at whatever version was current when it was discontinued, and one operating system upgrade later the hardware is inert. Nothing broke. The sensor still works perfectly.

This is the story behind almost every “my scanner stopped working after an update” complaint, and it is why a device’s software situation deserves as much attention at purchase time as its feed path.

What makes a device survive

Some scanners are far more durable than others in this respect, and the difference comes down to how many independent routes exist to get an image out of them.

Support for a generic scanning interface. Operating systems have their own built-in scanning frameworks, and devices that implement them can often be driven by the system’s own basic scanning utility with no manufacturer software at all. That is a fallback the vendor cannot take away.
Network scanning to a standard protocol. A scanner that can be reached over the network by a standard mechanism is talking to something maintained by the operating system rather than by the manufacturer, which is a much better-maintained dependency.
Writing files to a card or internal storage. The strongest form of independence: the device makes a standard file with no computer involved, and anything that can read a card can read it. This is discussed as a design choice in bus power, batteries and the scanner with no computer.
An open-source driver. For some hardware, community-maintained drivers exist and outlive the vendor’s by a wide margin. Whether one exists for a given model is worth checking before buying, particularly second-hand.

Devices with none of these — a bus-powered unit that only works through a single proprietary application — have exactly one route, controlled entirely by the vendor, and their life is however long that application is maintained.

Driver expiry strands the hardware. There is a worse version where the software also holds your existing scans in a private library, so its end-of-life takes your archive with it rather than merely your ability to make new scans. That is a separate problem with its own precautions, covered in bundled software lock-in.

The two compound. A device whose only interface is an application whose only storage is its own database is a single point of failure for both capture and retrieval.

Questions to ask before buying

For a new device, the useful questions are about routes, not about promised support.

Does the operating system’s own scanning utility see it, without the manufacturer’s software installed? Can it scan over the network using a standard mechanism? Does it write files to storage on its own? Is the model current, or already superseded — because support horizons are measured from discontinuation, not from your purchase.

For a used device, the questions are harder and more urgent, because the clock has already been running. Check whether software for your current operating system exists at all before you buy, not after; that is the first item in buying a scanner second-hand.

What to do with a device that has been stranded

If you already have hardware that no longer has working software, there are a few things worth trying before treating it as scrap.

Try the operating system’s built-in scanning utility, which sometimes recognises devices that the vendor never claimed support for. Check whether a community driver exists for the model. Check whether the device has any non-driver output route you have been ignoring — a card slot, a network mode, a scan-to-storage button. And consider keeping an older machine specifically as the host for it, on the understanding that a computer kept around to run unsupported software should not be doing anything else, since it is not receiving updates either.

If none of that works, the device is finished, and the lesson is worth carrying to the replacement: buy the one with more than one way out.

Why this matters more for receipts than for documents

Receipt scanning is a long, low-intensity habit rather than a project. A device bought for a one-off digitisation job only has to work for a few months. A device bought to capture slips as they arrive has to work for as long as you keep doing that, which is indefinitely, across several operating system changes.

That inverts the usual purchasing logic. Speed and resolution — the numbers on the box — matter less than whether the thing will still be usable after two operating system upgrades, because a modest scanner that works for a decade captures far more of your paper than a fast one that stops working. It is also the reason so many of the devices reviewed in this site’s older posts are now interesting mainly as history: the mechanisms were fine, and the software eras they belonged to ended.

Whether the files those devices produced are still adequate records is a different question, and one the hardware cannot answer. Requirements for the form and retention of records vary by country and by the kind of entity keeping them — ask your own tax authority or an accountant where you are.