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4. Using the HealthVault Data Ecosystem ... > Trusting Data in HealthVault Data Ty...

Trusting Data in HealthVault Data Types

Knowing the origin of data is often critical for an application that is using it for sensitive purposes. Some use cases warrant working with only trusted data, some warrant knowing whether the data is from a device or self-entered by the users, and in some cases the application might just want to work with known data providers.

HealthVault provides several ways to look at data provenance. Applications can look at the created_by and updated_by fields of a data type and see whether they were updated by devices or known applications. Additionally, HealthVault provides digital signing of data, which can create a very secure ecosystem of trust.

In our example, we look at the Source attribute of Weight items to see whether they were uploaded by a Withings scale or added manually by the user.


  

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