A smart toilet accessory that could be mounted to a toilet or urinal that could run multiple tests each time nature calls to see if you have been eating correctly. Give you dietary feedback based on pH, water concentration, color, odor of urine, etc. It could be tracked over time toggle by person based on user utilizing the bathroom.
The main processing units mounted to the side of the toilet are a single purchase which can be marked up <10%. The bulk of the revenue could be generated from the replacement probes that would have to be replaced frequently from using the toilet.