In this section
- Realtime messagingHow AiThao delivers messages instantly and never loses one: a WebSocket per app, the database written first, and catch-up for phones that were offline.
- End-to-end encryption, explainedHow AiThao uses the Signal Protocol: keys per device, a key that moves forward with every message, sender keys for groups, per-file keys and safety numbers.
- How calls workCalls use WebRTC. Depending on the connection, media travels through AiThao infrastructure or an external media service.
- How live call translation worksWhat happens to your voice in a translated AiThao call: a translation worker joins, streams speech to cloud models, and plays back speech or subtitles.
- How message and voice translation worksHow encrypted messages become cloud translations in AiThao: language choices, the original on double tap, group reading and the limits of encryption.
The parts, in one paragraph each
End-to-end encryption means the content is locked on your phone and unlocked only on the phones it was meant for. Here is how AiThao does that, step by step. Calls use WebRTC. Depending on the connection, media travels through AiThao infrastructure or an external media service. The route can change when the network is unavailable. This does not change the distinction between transport encryption and end-to-end encryption. A message written in one language arrives in another. The translation is made in the cloud, after your phone has decrypted the message.
Notifications go through the phone platform’s push service, with previews encrypted for your phone. Photos and files are encrypted on the phone and uploaded straight to object storage with a short-lived signed link.
What AiThao does not name
The pages name open standards and open-source software. They do not name the companies that provide cloud translation, speech, storage or relays: those change, and what matters to you is what each is allowed to receive, which the Security Center sets out.
Questions
Does translation run on my phone?
No. Translation always goes through cloud models; the phone records, encrypts, decrypts and plays, but does not translate.
Is AiThao open source?
No. It is built on open standards and open-source components such as the Signal Protocol and WebRTC.