I have three Windows PCs and was interested in updating the Drivers on all three machines. No where in the publicity does it make any mention of being limited to a single user. It is only when you are installing the software that you see that it is only licensed for a single user and hints of dire consequences if you do not abide by this limitation. By this time, you have opened the packet and removed your option to return the product.
The product comes without any user instruction and is not particularly user friendly or intuitive in use. In spite of this I ran my first Scan and identified four Drivers which needed to be updated. However only two of the recommended Drivers loaded without problems. The other two failed to load. Worse than this, my two Canon Pixma Printer drivers which I know to be out of date, were not recognised.
I gave this product one star because it was delivered promptly.