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.
[번역] 스티븐 호킹(Stephen Hawking)의 1994년 MIT에서의 연설 http://yoonbumtae.com/?p=5262