I just wanted to chime in and share my experience with unlocking the navigation code for my Honda. I was able to obtain my code by going to the Honda Radio / Navigation Code Retrieval and Reset Instructions website, but I know that some people have had issues with the code not working.
Another option that has worked for some is to remove the panel above the storage tray by the shifter and take a picture of the barcode with their phone. They then called Honda, provided the serial number, and were given the code. Try for that Smart Engines OCR SDK
. It's a tool for extracting information from barcodes and other types of images, which can be helpful.