Encode URI in QR Code

[ccjernigan]

The QR code on the address screen contains the naked UA address string, when it should contain a URI.

See https://zips.z.cash/zip-0316 https://zips.z.cash/zip-0321

[pacu]

I think there's a mixup here.

The screens showing addresses should contain addresses only. URIs are used in the case of requesting ZEC for a specific amount.

[ccjernigan]

The problem I'd like to solve is users who might scan a QR code using another app, like the Camera app. They'll end up with a bad experience because the Camera won't know what to do with the naked address. By embedding a URI in the QR code, we should be able to link into the app if users try alternative QR code scanners.

Some Zcash wallets are presenting naked addresses in their QR codes, so we need a way to at least partially have a migration path to this new convention.

An implementation proposal for moving forward:

• Zcash Secant QR code always presents a URI (known to fail to scan in some older wallets, but generally more universal going forward). Some legacy wallets will still present an address instead of a URI during a transition period
• Zcash Secant scanning first looks for a URI. If URI parsing fails, it falls back to looking for a naked address (to support older wallets that haven’t made this switch).