Referring to this link ERC: Standard URI scheme with metadata, value and byte code #67

Since it was proposed in 2016, may I know if there is any mobile wallet that can scan QR code with these 4 fields?

address, value, gas, data

Especially the data field. Thanks

1 Answer 1


A transaction QR code scanning is not a good approach for dApps. Nowadays there are a plenty of wallets through new WalletConnect interface which allows a wallet to connect to a website and then make several transactions with mobile approvals:


Users do not need to fill this field manually, but web3.js client library does it form them.

  • 1
    The Web3.js works on the web wallet. Does it works with Mobile Wallet?
    – s k
    May 6, 2020 at 13:25
  • Yes, please see WalletConnect demo. May 6, 2020 at 14:14
  • 1
    I took a brief look, seems like there is a need to pay Infura. I do not understand why using QR Code is not a good approach other than it is totally free.
    – s k
    May 6, 2020 at 22:08
  • 1
    Thanks Mikko, will do so later.
    – s k
    May 7, 2020 at 12:48
  • 1
    I tried to take a closer look, WalletConnect is kind of over engineered for application like "Scan QR code to pay for bus fare" on a bus. Anyway, this seems like the only viable option for now. Thanks.
    – s k
    May 9, 2020 at 0:32

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