When it comes to inventory management, there are two main types of barcodes to consider: linear barcodes and 2D barcodes. Linear barcodes are the most common and simple, consisting of a series of vertical lines and spaces that represent numbers or letters. On the other hand, 2D barcodes are more complex and advanced, consisting of a matrix of dots, squares, or other shapes that represent alphanumeric or binary data. Examples of linear barcodes include UPC, EAN, and Code 39, while QR code, Data Matrix, and PDF417 are examples of 2D barcodes. The type of barcode to use depends on several factors such as the amount and type of information needed to encode, the size and shape of products, and the durability and readability of the barcodes. Linear barcodes can store up to 20 characters while 2D barcodes can store thousands of characters including images, URLs, and encryption. Furthermore, linear barcodes require more space and a clear orientation to be scanned while 2D barcodes can fit in smaller and irregular surfaces and can be scanned from any angle. Additionally, linear barcodes are more susceptible to damage and distortion from dirt, moisture, or wear and tear while 2D barcodes have error correction and redundancy features that allow them to be scanned even if partially damaged or obscured.