Enjoy peace of mind in the sun


UV Safe,  UV Smart, UB You

LogicInk UV is a temporary tattoo-like device that visually records your accumulated exposure to UV radiation from the sun, alerting you of your daily recommended limit based on your skin group. This patent-pending invention helps you reduce premature aging of the skin and helps prevent health risks associated with overexposure to the sun.

A wearable for your skin

LogicInk UV’s power-free user interface alerts users when they have reached a safe daily UV limit determined by medical research on minimal erythemal dose (MED) for each particular skin tone. MED identifies the least amount of UV exposure needed for each skin tone to get a noticeable sunburn. LogicInk UV is waterproof and works with sunscreen.  Available in two designs, with more to come.



LogicInk UV — Circular

Logic Ink UV's distinctive circular design is a comprehensive indication of your UV exposure. The inner circle detects the current UV exposure by instantaneously changing its color from white to purple. The outer ring indicates your cumulative UV exposure by changing its color sequentially, clockwise. 


LogicInk UV — Bars

Logic Ink UV's bars design features the same functionalities as circular design. The upper bar indicates your cumulative UV exposure while the lower bar changes its color instantaneously, reacting to the current UV exposure. With LogicInk UV Bars, you can wear these smart sensors to match your style.


The Future of Wearables


Our Vision

Powered by programmable chemistry and biology, we envision a future where LogicInk wearables seamlessly integrate into your daily life, enabling health awareness and self-expression.


In the News

Fast Company: This Temporary Tattoo Warns You When You’ve Gotten Too Much Sun
November 3, 2017

Wareable: I had fun in the sun with LogicInk's UV-sensing temporary tattoo
October 26, 2017

Wareable: LogicInk's temporary tattoo tells you when it's time to get out of the sun
October 19, 2017

Techonomy 180 Shift: Is the Future of Wearable Health Tech…Tattoos?
November 16, 2016

NIAAA selects winners of its Wearable Alcohol Biosensor Challenge (then called BioInk)
May 19, 2016






Carlos Olguin
MSc Information Networking
Carnegie Mellon

Claire Le Maitre
BSc Chemistry
UC Los Angeles

Tal Danino
PhD Bioengineering
UC San Diego

Amy Friel
U of Michigan

Kari Workman
BFA U of Montana


Peter Foller
PhD Chemistry
UC Berkeley

Steven Wrobel
BSc Chemistry
UC Berkeley

Skylar Tibbits
SM Computer Science & Design Computation, MIT

E Roon Kang
MFA Graphic Design
Yale University

Marcelo Coelho
PhD, MIT Media Lab

George Church
PhD Biochem. & Mol. Biology
Harvard University