# This tech-packed temporary tattoo could be your next fitness tracker and even save your life

> Quick Summary Penn State engineers have developed colourful paint-on electrodes that can monitor your heart, muscles and brain without bulky wearables or sticky sensor patches.

- **Source:** [T3](https://www.t3.com/tech/smartwatches/this-tech-packed-temporary-tattoo-could-be-your-next-fitness-tracker-and-even-save-your-life?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a6064aa371c1b20cfba1cc7)
- **Published:** 2026-07-22
- **Category:** Wearables
- **Tags:** #smartwatch
- **Canonical:** http://localhost:4321/a/6a6064aa371c1b20cfba1cc7

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_GearOpen's distilled summary. The full original article is published at T3 (source link above); GearOpen does not republish the source's full text._