WhatsApp multi-device beta allows four devices at once even without a phone
Until now, using WhatsApp web on your desktop or any other device has required having a phone that’s powered on and connected, but a new beta test is trying out support for multiple devices without needing a phone in the mix. In a June interview, WhatsApp head Will Cathcart and his boss, Facebook CEO Mark Zuckerberg, commented on the technical challenge of maintaining end-to-end encryption. With a blog post today, Cathcart explains more about what has been done behind the scenes to maintain security.
As the image comparing the legacy and new systems (above) tries to explain, previously, a user’s phone managed the key determining their identity and ability to...
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