Compared to the usual EEG equipment (a new system can start at $20,000), the e-tattoo is also inexpensive, with its chips and battery pack only costing $200, and its disposable sensors about $20 each.

Electronic tattoo gauges mental strain Date: May 29, 2025 Source: Cell Press Summary: Researchers gave participants face tattoos that can track when their brain is working too hard.

A picture of the e-tattoo device designed to measure mental strain. Device/Huh et al. Unlike traditional EEG caps—often bulky and expensive—the e-tattoo offers a compact and cost-effective ...

A subject wearing the e-tattoo while answering test questions. Credit: Device H Huh et al. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday ...