Why need to enter a transaction password each time when verify a mnemonic?

Because BitKeep uses DESM dual encryption technology, users' digital assets are absolutely safe.
In some specific situations (such as the backup mnemonics stolen or lost), you can double-verify through transaction passwords,
re-back up mnemonics, and transfer assets in time, greatly reduce the risk of asset loss, so each time you export the mnemonics
need to enter the transaction password to verify,which to protect the user's assets better.