It’s a hefty patent filing, and it appears to have been set up for smaller companies and possibly individuals. Honda mentions that you would need a terminal like a PC, smartphone, or tablet for the management device and that two or more of these devices may share the same hardware. The hardware will measure emissions, while the software will grant you access to either an emissions certificate or carbon credits, but not both. This is to prevent fraudulent behavior, where a company or individual will claim and benefit from both.
The goal is to get a document certifying a reduction in carbon dioxide emissions. Obviously, measuring a reduction would have to take place over a certain period of time. Honda mentions a period of two years, but it can be longer.