I am working on the mobile app which operates with chain and have to sign transaction by user. For PoC apps should support MetaMask wallet. Therefore I need a user’s private key.
The issue is originally MetaMask is a browser plugin and there is no direct way to get it from mobile app. However I just discovered MetaMask offers their own Android client and Android supports the variety of options to share data from one app to another one.
Allow MetaMask users from 3rd party app work with chains to sign their transactions.
I still think about possible option to do this as each option opens its own vector of attacks. Let’s think more about it.