I have discovered, through personal experience and checking online forums, that the software for my 10-year old, CanoScan 8800f, film and negative scanner is no longer supported for High Sierra users. Users of this particular scanner, a wonderful workhorse, are furious. I know that one solution is to purchase VueScan software for about $50. I have seen that another solution would be to find an open-source driver. As I continued my search for an answer, someone noted that scanners should work with Image Capture, but Image Capture does not recognize this scanner. Further searching revealed (and I hope I have this right) that Image Capture does not "see" this scanner because the scanner is not TWAIN-compliant. Is there some way I can make this scanner TWAIN-compliant?