Semi-related, one of the `imessage-exporter` contributors provided a great write-up on reverse engineering the handwritten and digital touch message protobufs [

Semi-related, one of the `imessage-exporter` contributors provided a great write-up on reverse engineering the handwritten and digital touch message protobufs [0]. The reconstructed proto files are [1] [2]. [0]: https://github.com/trymoose/handwriting2svg/blob/0eb56cf458207bb1c2ceea48cf4b6b6510fa7b13/DISCOVERY.md https://github.com/trymoose/handwriting2svg/blob/0eb56cf4582... [1]: https://github.com/ReagentX/imessage-exporter/blob/beeb853b211b52d71bf5f8e6e241810b89bd93cc/imessage-database/src/message_types/handwriting/handwriting.proto https://github.com/ReagentX/imessage-exporter/blob/beeb853b2... [2]: https://github.com/ReagentX/imessage-exporter/blob/beeb853b211b52d71bf5f8e6e241810b89bd93cc/imessage-database/src/message_types/digital_touch/digital_touch.proto https://github.com/ReagentX/imessage-exporter/blob/beeb853b2...