What are the differences, advantages and disadvantages between portable scanners and traditional scanners?

Specifically, a digital scanner like Jixing International is a portable scanner. Its main features are 1 and fast scanning, which can scan 3D objects. 2. Powerful software functions, such as PDF conversion, print-free, OCR recognition, etc. 3. Paperless office, environmental protection. 4. Mobile and portable, which can realize mobile office. Products like this mainly promote the concept of paperless office. That is to say, traditional scanners, such as flatbed and paper-fed scanners, have long scanning time, complicated operation, limited scanning media and so on. That's about it. Give points!