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Fraud prevention using Device Check when publishing multiple apps

I would like to confirm about fraud prevention using Device Check when publishing multiple apps.

  1. If the Team ID and Key ID are the same, will the values be shared across all apps with Device Check?

  2. With Device Check, only two keys can be created per developer account, and these two are primarily intended for key renewal in case of a leak, rather than for assigning different keys to each app, correct?

  3. If both 1 and 2 are correct, does that mean that Device Check should not be used to manage "one-time-only rewards per device" when offering them across multiple apps?

Thank you very much for your confirmation.

Fraud prevention using Device Check when publishing multiple apps
 
 
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