End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
https://9lib.co/document/y4wkw3o9-中高齡視障者電腦使用動機及對圖書館電子化資源服務需求之研究.html