Fatal opioid overdoses are a major public health problem. I would like to share some of our work on a wearable device that can detect the onset of an opioid overdose, and administer naloxone to rapidly restore breathing and potentially save lives. rdcu.be/cBNaJ

Recently we partnered with the University of Washington to develop a peer-reviewed research paper focused on a proof-of-concept closed-loop, wearable naloxone injector system. Learn more here: bit.ly/31uDqJ7

Millions of people take blood thinners throughout their life, and need to monitor their blood clotting times. We developed a smartphone-based test to measure clotting times using just a single drop of blood. Our Nature Communications paper on this: nature.com/articles/s4146…

What if a smartphone blood clot test could replace home and lab based testing for warfarin INR monitoring? nature.com/articles/s4146… Justin Chan @UWCSE

This is badly needed for patients still taking Warfarin. Last month my wife got infected by Omicron which was thankfully mild, but resulted in a lot of changes to her blood afterwards, esp her anticoagulation In particular, her dose of warfarin caused her INR to be at 13 😱

For patients on coumadin, smartphone vibration + camera with blood drop on copper particle can reliably estimate PT/INR (R=0.974) nature.com/articles/s4146… Nature Communications (video: youtu.be/NkZ9WIlkhdo)

"Hear us out: Smartphone lidar can test blood, milk" looks at how research by #UWAllen's Shyam Gollakota, Justin Chan & Ananditha Raghunath and UW Anesthesiology & Pain Medicine's Dr. Kelly Michaelsen could swap smartphones for expensive lab equipment: theregister.com/2022/03/18/sma… via @theregister

💡 NEW RESEARCH! Chan et al. develop an open-source, lightweight, low-cost smartphone attachment for performing #tympanometry | @RealJustinChan Shyam Gollakota Allen School ow.ly/LkE450JzoyO

~34M children worldwide live with disabling hearing loss—a majority preventable. A portable, affordable smartphone tympanometry system from University of Washington UW Medicine Seattle Children's could help provide timely screening for middle ear disorders (Communications Medicine): news.cs.washington.edu/2022/06/16/sma…

Our smartphone-based design for diagnosing middle ear disorders. Same accuracy as clinic device + 100x lower cost. Has potential for use in developing countries. Hospitals there rely on very small # of donated devices + have to serve patients from faraway ow.ly/LkE450JzoyO

⭐New Research Highlight: Tympanometers to test for ear disorders are costly, so scientists developed a portable and cheap smartphone-based tympanometer for use in resource-limited settings. Study published in Communications Medicine nature.com/articles/d4159…

Texting while driving 🚘? No. ✋ Texting while diving 🤿? Yes! 👍 University of Washington #UWAllen researchers made a splash at #SIGCOMM with AquaApp, the first mobile app to bring underwater messaging to smartphones 🌊 — no special hardware required 🙌! news.cs.washington.edu/2022/08/29/all… #UWinnovates

The team behind AquaApp — University of Washington #UWAllen professor Shyam Gollakota and Ph.D. students Justin Chan and tuochao chen — made the open-source code for Android available online so you can take it for a swim 🏊: underwatermessaging.cs.washington.edu

I'm excited to share AquaApp: the first mobile app to bring underwater messaging to smartphones without any additional hardware. It uses acoustics to communicate — kind of like a submarine or a dolphin, but all on your phone! SIGCOMM paper and code: underwatermessaging.cs.washington.edu

Our $10 earphone attachment screens for new-born hearing by detecting otoacoustic emissions, it has potential to reduce health inequity by making screening more accessible. Has comparable performance to FDA-cleared device on 201 ears. Our Nature BME paper: nature.com/articles/s4155…

Excited to announce the next ✨ 𝑬𝒎𝒆𝒓𝒈𝒊𝒏𝒈 𝑹𝒐𝒄𝒌𝒔𝒕𝒂𝒓 ✨ of Pervasive Computing, Dr. Justin Chan (Justin Chan)! Justin is an Assistant Professor at Carnegie Mellon University and has done remarkable work in advancing digital health for low-resource settings using mobile devices.

How #AI can be used to avoid medication errors in the operating room nature.com/articles/s4174… Kelly Michaelsen Justin Chan Allen School open-access

We present the first AI-enabled wearable camera system to detect medication errors in the operating room. Our system serves as a new set of "eyes" that has the potential to reduce patient harm prior to drug delivery. npj Digital Medicine nature.com/articles/s4174…

I am looking for a postdoc interested in privacy-preserving systems for extended reality and autonomous systems through this CMU Fellowship Program (cmu.infoready4.com/#competitionDe…). If you are interested in working together, please apply and email me.