Cosmetically, Jot Touch 4 looks so similar to the original Jot Touch that Adonit’s web site notes a single way to differentiate between models: the new version of the roughly 6.1”-long, 0.4”-diameter stylus has a triangular logo next to Adonit’s name, while the old one has a smaller plus logo. Both otherwise have the same colored metal body with a rubber finger grip, interrupted by two shortcut buttons and a dual-color power…