Estonian engineers turn 15-year-old $9 trash phones into pocket-sized data centers

Researchers at the University of Tartu hacked old smartphones into powerful mini-servers, outperforming Raspberry Pi at a fraction of the cost. The team repurposed discarded Google Nexus devices, replacing Android with Linux and linking them to create a tiny data center capable of AI-powered image recognition underwater. This innovative approach could reduce e-waste and provide affordable computing power for various applications.