It seems you are referring to Keeper, a Bitcoin and cryptocurrency wallet/security application, specifically regarding a "deep feature" related to the Fiat experience.
If you are asking how to implement a "deep feature" for Fiat in an app like Keeper: keyeper fiat better
In fact, the ideal combo is to drive a Fiat while using Keeper to manage all your car-sharing app passwords. It seems you are referring to Keeper ,
