parity-signer VS web3modal

Polkadot Vault (formerly called Parity Signer) is open-source. You can view the code here: https://github.com/paritytech/parity-signer/

I wouldn't say it's a black box system. If you want, you can read the code here, compile it yourself and load it on to your phone - https://github.com/paritytech/parity-signer

Don't think there's any HW wallets supported atm. Personally I'm using Parity Signer on an old phone, air gapped. But that's also quite involved to get up and running. (https://github.com/paritytech/parity-signer/releases/tag/v5.0.1) But to get it to work with ACA you need to add the network and the metadata, see https://metadata.parity.io/, if you're technical you can checkout their github project and locally run an update site for Acala.

Have you looked into Parity Signer? https://github.com/paritytech/parity-signer

You can re-purpose an old mobile phone to be a secure air-gapped wallet with Parity Signer. https://github.com/paritytech/parity-signer/

You can run the polkadot.js/apps UI natively as an electron client. That's available from the releases page: https://github.com/polkadot-js/apps/releases For added security+confidence, you could connect this to a locally-run node instead of parity (or whoever)'s publicly run RPC nodes. If you want a cold wallet (i.e., offline, used for signing transactions, etc) you can use parity-signer

Parity Signer

It isn't misleading in any way shape or form. The developer of the tool agrees that right now it should not be used. See their response here: https://github.com/paritytech/parity-signer/issues/680

WalletConnect Web3 Modal (3700 GitHub Stars) https://github.com/WalletConnect/web3modal

Web3Modal

There are other several libraries to create a web3 enviroment as: Rainbowkit || Wagmi || Scaffold-eth || useDApp || web3modal || Web3-UI

It seems like a rare solution. There's this library which claims to help but on its demo site it has the same problem as what my code has.

Now lets install Web3Modal library(https://github.com/Web3Modal/web3modal). Web3Modal is an easy-to-use library to help developers add support for multiple providers in their apps with a simple customizable configuration. By default Web3Modal Library supports injected providers like (Metamask, Dapper, Gnosis Safe, Frame, Web3 Browsers, etc), You can also easily configure the library to support Portis, Fortmatic, Squarelink, Torus, Authereum, D'CENT Wallet and Arkane. Open up a terminal pointing atmy-app directory and execute this command

I've used web3modal in the past

The Web3Modal library is a simple Web3/Ethereum provider solution, which enables the addition of support for multiple providers in the application. The Web3Modal library supports the injected providers that we’ll rely on in this project, MetaMask and Tor.us.

I've asked in discord server, and a guy shared me that library : https://github.com/Web3Modal/web3modal

hardhat - Ethereum development environment web3modal - An easy-to-use library that allows users to connect their wallets to your app react-markdown and simplemde - Markdown editor and markdown renderer for the CMS @emotion/css - A great CSS in JS library @openzeppelin/contracts - Open source implementations of useful smart contract standards and functionality