Acknowledgements
The authors would like to thank the collaborators who contributed to the infrastructure design and implementation: Arun Ganesh, Brendan McMahan, Brett McLarnon, Chunxiang (Jake) Zheng, Emily Glanz, Maya Spivak, Michael Reneer, Nova Fallen, Stefan Dierauf, Suxin Guo, Timon Van Overveldt, Yu Xiao, Zachary Charles, and Zachary Garrett. We also thank close partners who supported the Gboard integration: Haicheng Sun, Heng Su, Jianpeng Hou, Liyang Jiang, Noriyuki Takahashi, Wenzhi Mao, Xiaojuan Fang, Yanxiang Zhang, Yingjie Liu, Yuanbo Zhang, and Yun Wang. This work was supported by Corinna Cortes, Shumin Zhai, and Yossi Matias. We additionally thank Maysam Moussalem for feedback on the writing of this post.