On November 23rd, Tony Fadell, the "father of the iPod", has now officially joined the board of directors of Ledger. Tony Fadell has served as Ledger consultant and designer of Ledger Stax since 2022. From 2006 to 2008, he served as the senior vice president of Apple's iPod division, leading the development and design of the iPod, so he is known as the "father of the iPod".