See my blog on scan to pdf
You can even find one about the size of your cell phone. Some of these are called mini portable scanners which are extremely popular. A portable scanner will typically be able to be hooked up to your laptop via the USB port and then the data that you scanned can be transferred to your laptop. Your documents and images can be scanned at a high rate of speed with a portable scanner. Data from the portable scanner is transferred onto the laptop so it can be managed and edited later.