Researchers at UT Austin have unveiled a groundbreaking non-permanent electronic tattoo designed to monitor mental strain. Published in the journal Device on May 29, 2025, this innovative technology offers a more accessible and less intrusive method for tracking cognitive workload, particularly in high-stress occupations.
The e-tattoo, priced at approximately $200 for the chips and battery, with disposable sensors costing about $20 each, presents a cost-effective alternative to traditional EEG equipment, which can exceed $15,000. The device analyzes brain activity and eye movements using thin, flexible sensors that comfortably adhere to the forehead. During tests, the e-tattoo accurately detected changes in brainwave patterns, with increased theta and delta waves signaling higher mental load and decreased alpha and beta activity indicating fatigue.
Nanshu Lu from UT Austin highlights that the technology could revolutionize workplace wellness by enabling continuous, real-time monitoring of mental strain. Luis Sentis envisions the e-tattoo becoming a consumer product for at-home use. The team is also working on integrating ink-based sensors to allow for comprehensive brain monitoring, even on individuals with hair. This advancement promises to enhance understanding of human-machine interaction and improve overall workforce well-being.