See #3420
DataStore API (https://developer.android.com/training/data-storage/room) can be used as a Key-Value storage or to store objects using protocol buffers (Proto DataStore). By default, it is not encrypted. Developers should therefore be cautious when using the API.
For the Demo I'm thinking of using DataStore to store plain text passwords and an object containing PII. The data will be stored in plain text in the sandbox.
Depending on the complexity (Key-Value and Proto DataStore), it may make sense to make two demos.