Gummiphone

The Gummiphone is a mechanic introduced in Kingdom Hearts III with multiple useful features. Designed by Chip and Dale and made out of gummi, the phone serves as a main method of between world communication with Sora. It also offers a camera (used to capture Lucky Emblems) and a digitized version of Jiminy's Journal.

Kingdom Hearts III
After their adventures in Olympus, Sora, Donald, and Goofy return to The Mysterious Tower, where Master Yen Sid tells Sora to continue on his search for the power of waking with the end goal of saving Aqua. Before they leave, Sora expresses frustration with not getting a new outfit, until Yen Sid summons another suitcase, this one filled with special clothing from Flora, Fauna, and Merryweather, and the Gummiphone, a gift from Chip and Dale. Sora is ecstatic as he and his friends set off on their journey.

Inside the Gummi Ship, Goofy and Donald are waiting for Sora to set their next path of travel when they are interrupted by a strange ringing sound. Sora pulls a device from the pocket of his new outfit and, confused, presses a button on the front. Dale and then Chip appear on the device's screen, revealing what Sora holds is a Gummiphone, something they created so they could keep in touch with Sora on his travels. They have called to tell Sora about some of Ansem the Wise's data that Riku discovered during their time in sleeping worlds. The conversation is joined by Ienzo, who has been examining the data Riku found, and informs Sora that they have learnt that Sora's heart doesn't completely belong to him. To the other's surprise, Sora is not shocked by the information, for he has suspected Roxas was inside his heart for some while. Intrigued, Ienzo signs off to continue his investigations, while Chip and Dale give a cheery farewell and the promise of help should the others ever need it.