Support QR code based accounts

[Tbaut]

I'd like to request the support for qr code based accounts such as Parity Signer or Stylo. This would require to be able to add an external account by scanning a qr code, and then show a qr code and scan a signature in case the account that requests a signature is external.

[kvhnuke]

Hi thanks @Tbaut this definitely something we can look into, however currently we cant provide any time frame as we are working on couple of critical features and few bug fixes.