2-way transactions form part of the Zucoins built-in 2FA (two-factor authentication).
To complete a transaction with Zucoins, the transaction must be confirmed by both the sender and the receiver. This process eliminates spamming, as seen with current blockchain 1-way transactions. With Zucoins 2-way transaction, the transaction will expire if the transaction is not completed within a 90-second time block.
1-way transactions can also cause loss of coins if the receiving wallet address is entered incorrectly. With 2-way transactions, coins can not be lost as the receiver needs to confirm the transaction by entering a transfer code into their wallet.
If you accidentally send a transaction to the wrong person, there will be no lost funds, the transaction simply expires after 90 seconds. Then you can try again.