Attaching equipment to a vehicle diagnostic port is a standard third-party practice. In the US, the Moss Magnuson Warranty Act of 1975 addresses aftermarket additions and vehicle warranties. Samsara is read-only, does not attempt to modify a vehicle’s ECU, and is generally designed not to interfere with a vehicle’s operation.
Samsara is a member of Electrical Training Institute (ETI), an organization that includes both diagnostics vendors and vehicle manufacturers, providing Samsara with diagnostics information directly from the manufacturers. Samsara is thoroughly tested for interoperability with a wide variety of vehicles.