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Overview

Some applications require users to sign in by signing an off-chain message. This can be problematic for Smart Wallets where the connected address is a PDA (Program Derived Address) that cannot sign messages.

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Problem

Applications that mandate sign-in via off-chain message signing create barriers for SquadsX users. The Squad vault address is a PDA, which cannot produce cryptographic signatures for off-chain messages. SquadsX does not support solana:signMessage or solana:signIn, so an app that requires either one cannot be used with SquadsX.

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Solution

  • Avoid making sign-in mandatory for using the app
  • Consider scenarios where a wallet can’t sign messages (PDA)

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Implementation Guidelines

  • Make off-chain message signing optional where possible
  • Provide alternative authentication methods for PDA-based wallets
  • Avoid requiring signature-based authentication as the only option
  • Avoid blocking app functionality behind mandatory sign-in