Summary

It is possible for users to send DUSK to their own address. For certain use cases, like merging notes and posting metadata on-chain through a memo, this can be valid to do. If user's do send funds to themselves without this as explicit intent however, they will just be deducted the gas fee. It would therefor be helpful to warn the user if they're sending funds to their own address.

Possible solution design or implementation

We can take multiple approaches, but the simplest would be to check whether the sender and receiver are the same in interactive mode, and prompting the user to confirm if this is what they intended to do.