Like what3words but for phone numbers: Startup wants people to use domain names for its WhatsApp rival
A privacy-focused alternative to existing platforms
Thunderbolt uses DNS ownership as a form of identity verification, which avoids the vulnerabilities of centralized databases and traditional login credentials. This approach allows users to maintain control over their personal data and ensures that sensitive information remains private.
The concept behind Thunderbolt is not new. Systems like what3words have already successfully translated complex data into simpler, more memorable units. However, Thunderbolt applies this idea to communication rather than geography, offering a unique solution for voice, video, and text communication.
A digital home as a universal identifier
Spaceship presents domain names as a "digital home" that can serve as a universal identifier. This concept allows users to make calls or send messages using a domain like "alice.chat" instead of a phone number. The company claims that domain names are more secure, inherently private, and easier to remember.
"A domain is a public address, but it reveals nothing personal," the company states. Thunderbolt also promises end-to-end encryption and no central message storage, claiming to deliver a high degree of privacy. Security is tied to DNS ownership, with DNSSEC used to further authenticate access.
Security concerns and limitations
However, this model assumes users are comfortable navigating domain registration and DNS server settings, tasks that many still find opaque and unintuitive. While decentralized identity and DNSSEC offer strong protections, no system is entirely immune to compromise. The claim that the platform is "virtually impossible to hack" also warrants skepticism.
Thunderbolt supports traditional domains, as well as Handshake and ENS domains, offering compatibility with third-party registrars. However, the app's onboarding experience is optimized for users who register domains through Spaceship, raising concerns about vendor lock-in and the true commitment to decentralization.
A crowded market and potential limitations
Thunderbolt enters a crowded market dominated by platforms like WhatsApp, Zoom, and Skype. People seeking the best alternative to Skype may appreciate that Thunderbolt has no ads, uses strong encryption, and gives users more control over their identity.
However, it remains unclear how well the platform performs at scale, or how easy it is to find and connect with others on the app. While this may appeal to those who already run personal websites or online portfolios, the average consumer might find it cumbersome compared to services that work out of the box.
About the author
Efosa has been writing about technology for over 7 years, initially driven by curiosity but now fueled by a strong passion for the field. He holds both a Master's and a PhD in sciences, which provided him with a solid foundation in analytical thinking. Efosa developed a keen interest in technology policy, specifically exploring the intersection of privacy, security, and politics.
His research delves into how technological advancements influence regulatory frameworks and societal norms, particularly concerning data protection and cybersecurity. Upon joining TechRadar Pro, in addition to privacy and technology policy, he is also focused on B2B security products.
Efosa can be contacted at this email: udinmwenefosa@gmail.com