Here’s how the new multi-device architecture works for a WhatsApp message:

The company uses a scalable sender key encryption scheme from the Signal Protocol for group conversations. Here, WhatsApp says that each message is individually encrypted using the established pairwise encryption session with each device, and messages are not stored on the server after they are delivered. Plus, WhatsApp creates a pairwise encrypted session where the client encrypts the messages and transmits them to all the linked devices of the user. According to the company, it now uses a client-fanout approach where each device has its own identity key. To overcome the limitation of requiring an active phone, WhatsApp has revamped its underlying architecture of how its messaging app works. The life of a message in the current architecture looks like this: That is precisely why you always have to keep your phone connected to the internet while using WhatsApp Web or Desktop. In its current state, WhatsApp uses your phone’s app as the primary device, and all other platforms such as WhatsApp Web or Windows/ Mac apps rely on this connection to function. After all, one shouldn’t compromise privacy for the sake of convenience, especially in a private messaging app, right? Unfortunately, you can’t use the same WhatsApp account (or phone number) on two phones just yet.īefore we get to the steps for using one WhatsApp account on different devices, it’s important to know how multi-device support works to address privacy concerns. The best part here is that you will still be able to use WhatsApp on these devices even if your phone loses the internet connection. These devices include WhatsApp Web, WhatsApp Desktop for Windows, WhatsApp Desktop for Mac, and Facebook Portal. WhatsApp’s multi-device feature lets you simultaneously use your WhatsApp account on your phone and up to four other devices. What Is Multi-Device Support on WhatsApp and How it Works? Potential Privacy Concern with WhatsApp Multi-Device Feature WhatsApp Multi-Device Beta: First Impressions Use Same WhatsApp Account on Multiple Devices How to Enroll in WhatsApp Multi-Device Beta

What Is Multi-Device Support on WhatsApp?

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