+44 (0) 1273 386849ISBNs vs Barcodes: Which Library Identification System Is Best?
When it comes to managing a library collection, having an efficient identification system is essential for keeping track of your resources. But what’s the best way to identify each item? Most libraries use both ISBNs and barcodes — and while they may look similar, they serve very different purposes.
This guide explores the pros and cons of ISBNs and barcodes, and how each contributes to a well-organised library management system.
Why libraries need unique identifiers
Every item in your collection should have a unique tracking number to ensure accurate lending and record-keeping. Without one, it’s easy to lose track of duplicates or misfiled books.
Many libraries use acquisition numbers — sequential numbers assigned to each new item. These work well because they show at a glance which items were added most recently and make every copy traceable.
What is an ISBN?
An ISBN (International Standard Book Number) is a product identifier assigned to books and pamphlets, but not to serials such as magazines or newspapers (these use an ISSN). Every edition and format of a book has its own ISBN, which makes it easy to find and catalogue titles accurately.
For librarians, ISBNs are extremely useful for downloading bibliographic records and ensuring that catalogue details such as title, author, and format are correct. That’s why it’s important to include the ISBN in every catalogue record.
The limits of ISBNs for library tracking
ISBN vs barcode? While ISBNs are perfect for identifying titles, they don’t distinguish between copies of a book. A school might buy thirty copies of the same textbook — all with the same ISBN. If one goes missing, the system can’t tell which one.
Even if you usually hold a single copy of each title, using the ISBN as your unique identifier will eventually cause problems once you buy a second copy or different edition. ISBNs were designed for publishing and sales, not for day-to-day library tracking.
Why barcodes make better unique identifiers
To track individual copies, libraries use barcodes. A barcode acts as a unique item identifier (or acquisition number) for each copy. Most library systems, including Simple Little Library System (SLLS), automatically generate sequential numbers for new items — you can either use those or replace them with pre-printed barcode labels.
Each barcode label represents a single copy, linking it to its record in the system. When you scan the item during checkout or return, the system instantly updates its status — no manual typing, no mix-ups.
Benefits of using barcode labels
Barcodes don’t replace ISBNs, they complement them. Use the ISBN in your catalogue to identify the title, edition, and format, and a barcode (or acquisition number) to track each physical copy.
Accuracy: Each copy has its own unique number, reducing cataloguing errors.
Speed: Scanning speeds up loans and returns, improving service for readers.
Durability: Professionally printed barcode labels are coated, smudge-resistant, and long-lasting.
Branding: Custom labels can include your library’s or school’s name.
Efficiency: Less manual data entry means more time for supporting users and managing resources.
Streamline your library with barcode labels
If you’re ready to make your library more efficient, browse our range of barcode labels and scanners  in the Simple Little Library System shop. They’ll help you save time, reduce errors, and keep your collection beautifully organised.
Try Simple Little Library System for Free
Contact us to discuss your library needs. We promise a swift response, ensuring your queries are addressed promptly.
We’re offering a Free One-Month Trial, with no obligations, or credit card requirements, allowing you to experience our service’s value and ease firsthand.
Frequently Asked Questions (FAQs): ISBNs vs Barcodes: Which Library Identification System Works Best?
1. Do I need both ISBNs and barcodes in my library?
Yes. ISBNs identify the title, edition, and format of a book, while barcodes identify each physical copy. Using both ensures accurate cataloguing and efficient lending.
2. Can I make my own barcode labels instead of buying pre-printed ones?
You can, but pre-printed barcode labels are usually more durable and readable. They’re coated to resist smudging and fading, and the sequential numbering saves time when setting up your library.
3. What happens if two books share the same barcode?
Each barcode must be unique. If two items share a barcode, your system will treat them as the same copy, causing loan and tracking errors. Always assign a new barcode or acquisition number for each physical item.
4. Do eBooks and digital resources need barcodes?
No. eBooks, audiobooks, and other digital items don’t need physical barcodes. They can be tracked using the ISBN or a unique digital identifier within your library management system.