The question of the security system is very important for users. How do you feel about safety?
Keys are generated on the device and never leaves it.
Also for the successful transaction are needed two signature: the first from user, the second from the server side.
It will be also possible to add different multifactor verification methods for server-side signature like:
email/sms confirmation,
biometric verification by face,
voice or fingerprint.
The wallet is safe by itself, but the user can make it more safety. There are a lot of features for this.
How will the biometric verification by face and fingerprint be carried out?
I think that to determine the biometrics of the face it is necessary to use the camera.