Smart Meter Verification is a robust technology for in-situ verification of Coriolis flowmeters. It can be used with confidence as a cost-effective and robust means of verifying Coriolis flowmeter performance and safety. Annual or more frequent proving of flowmeters and other devices is common. Coriolis meters are widely known for their stability and linearity over time, suggesting that proving intervals might be extended, reducing proving and proof-test costs.