Digital Trends – Announced on the companyâs official site recently, Seattle-based Puzzazz has designed a technology called Touchwrite that recognizes letters and numbers on e-readers. While handwriting technology isnât a new achievements, this is the first time any company has found a way to use the technology on devices like Amazonâs Kindle Touch. Puzzazz officials have shown off an example of the technology working on a Kindle while playing a game of Sudoku. Users can draw a number within a Sudoku box on the game board and it appears on the Kindle. Users also have a choice between drawing a tiny version of the number in a specific box or drawing a large version which is placed wherever the finger originated. In addition, users can tap the screen in order to place potential guesses on the game board. Â