In the wake of the launch of privacy coins Beam and Grin ($grin), Litecoin ($LTC founder Charlie Lee tweeted that Litecoin will work towards Confidential Transactions for enhanced fungibility. Lee stated that both Bitcoin ($BTC) and Litecoin lack fungibility which should be a new goal after settling the scaling debate. Confidential Transactions is an alternative encryption method that masks transaction input and output information much like Mimblewimble technology.