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That would make the devices more costly to produce and would raise prices. I know that ISPs do this with their devices sometimes, but some companies will cheap out and will just ship with a generic username and password since they only have to flash one single ROM image.

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It shouldn't really. I mean, it's not like devices don't come with at least 3 or 4 unique IDs for different purposes. Just using one of those for the default password or adding a new ID shouldn't be that big of a task.

I know that this is how some of the router/modem combos from french DSL providers worked - the admin and WPA passwords are two seperate UUIDs printed on the device.

The gateways provided by the cable ISPs here in Western Canada tend to have unique passwords. It would be prudent on the part of the device manufacturer to just create a scheme for creating default passwords based on the unique serial that the device has and then just print labels for each and have the default ROM just sort it out upon it being powered up for the first time.

They can flash a single ROM image, create a random password on the device , and just by adding a led , they communicate said password to a mobile app, when needed.

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