Twitter ke co-founder Jack Dorsey ne eik naya messaging app Bitchat introduce kiya hai jo bina internet ya signal ke kaam karta hai. Ye Bluetooth mesh network ka use karta hai jisse log seedha eik dosray ko message bhej saktay hain. Bitchat mein account, number ya email ki zarurat nahi, messages sirf device par save hotay hain aur encrypted hote hain.