Researchers weave a full computer into a single washable fiber

Researchers in China have unveiled a stretchable, machine-washable fiber that functions as a complete computer, packing sensors, processing, storage, and communication into a single strand of thread.

Unlike previous “smart textiles” that only embed simple conductors, this fiber computer includes a microcontroller, temperature and motion sensors, a photodetector, and even a photoplethysmogram sensor for monitoring blood flow. Coiled copper microwires allow the system to flex up to 60% without breaking, while built-in modules handle both optical and Bluetooth communication.

In early tests, garments stitched with the fibers could recognize exercises such as squats and lunges. A single strand hit about 67% accuracy, while four working together reached ~95%, showing the benefits of networked sensing.

The concept could enable clothing that doubles as a health monitor or motion tracker without bulky hardware. Challenges like power supply, bandwidth, and large-scale production remain, but the team has already proven one thing: future computers may not just sit in your pocket — they could be woven into your sleeves.