Skip to main content
  1. Home
  2. Health & Fitness
  3. Smart Home
  4. News

This contact-free thermometer turns temperatures into a timeline

Add as a preferred source on Google

Contact-free or infrared thermometers not only let you keep germs at bay, but also open up a host of connected options. For parents, this means peace of mind is attainable. The Flo from Zeraph is a smart thermometer that lets anyone keep track of temperatures over time through its iOS app for phones and Apple Watch. It launched February 3 on Kickstarter.

Flo creator Eddie Cheung has two kids of his own, and his experiences as a parent influenced Flo’s design. “For me, the biggest relief comes from the knowledge that the fever is subsiding and medication is working for my kids,” he told Digital Trends. “And I often think back to such instances as a guideline to design Flo. I don’t want to wake up the kids, I want to know right away and I want to remember this moment as part of them growing up. This drove many of the design decisions.”

Recommended Videos

A key phrase that comes to mind when using thermometers is “don’t wake the kids.” With contact-free thermometers, this is its own reward. A thermometer you don’t need to insert into an orifice or under an arm stays clean. The Flo keeps things even cleaner by letting you use it without having to touch your phone (you’d be horrified to learn how dirty your phone might be). The color LED on Flo’s tip indicates current temperature. Green is normal, red signifies a fever, and white indicates chills (Flo stores up to 10 readings). When you do grab your phone, you can see the exact temps or have them read aloud in audio mode. In either case, readings are logged for future reference.

That’s just an example of app functionality that separates Flo from other infrared thermometers. It creates a timeline of temperature readings so you have some context to interpret the raw data. Flo’s timeline will allow you to track temperatures for different people. Trying to conceive? A woman’s temperature is usually higher during ovulation, so Flo can help with that, too. Want to know if your kids are getting better while being so frazzled that you can’t remember their temperatures? Flo does it for you. Add photos, notes, and tags to readings for added clarity and detail in the timeline.

Sharing is probably the most important feature that gives Flo a leg up over basic infrared thermometers. Send the info directly to the next family member taking over nursing duties — or even better, to a nurse or doctor.

Flo’s good for more than just people (and pets); since Flo is infrared, you can use it to check the temperature of things like milk, or home-brew Kombucha. This works for surface temps only though — it’s not a meat thermometer. The Flo hardware itself comes in four colors and runs on CR2032 batteries, which should last about three months with daily use. On release it will work with iOS 8+ via Bluetooth.

Super early birds can grab a Flo for $15 during the Kickstarter campaign. The Zeraph team has 15 years combined in the consumer product development game. They took the time to finish the hardware tooling and polish the iOS app before kicking off the campaign, so there’s better chance of on time delivery. The company expects to ship Flo in April.

Aliya Barnwell
Former Contributor
Aliya Tyus-Barnwell is a writer, cyclist and gamer with an interest in technology. Also a fantasy fan, she's had fiction…
Starfish-inspired patch solves key issues for wearable heart sensors
Heart rate sensor inspired by Starfish.

The domain of wearable devices has grown by leaps and bounds, not just in terms of mass adoption, but also owing to some astounding innovations. Wearable heart rate sensors can now measure everything from heart rate and blood oxygen levels to ECG in form factors ranging from a watch to finger rings.

These sensors, however, come with an inherent set of problems. Motion artifacts arising from movement or vigorous activity alter the blood flow and affect their accuracy. Optical heart rate sensors (photoplethysmography or PPG tech) also struggle with darker skin tones, tattoos, or even body placement. 

Read more
The Chairman™ Pro package is on sale — and it’s the only shaving kit you’ll ever need
manscaped products

There’s grooming, and then there’s grooming with intention. If your current routine feels more like a chore than a ritual, it might be time to rethink your tools. The Chairman™ Pro Package from MANSCAPED® is a full-face grooming system that doesn’t just clean you up—it sharpens your whole look. Right now, it’s available for $169.99 (11% off the usual $189.97), and you can drop that price even further to $159.99 when you subscribe to the Chairman Pro Package + Peak Hygiene plan. Throw in free shipping, and it’s a solid deal on a seriously well-thought-out kit.
One kit. Total control.
At the heart of the package is The Chairman™ Pro Electric Foil Shaver, MANSCAPED® top-tier tool designed for guys who want versatility and comfort in equal measure. This isn’t your dad’s shaver—it comes with two interchangeable SkinSafe® blade heads: a four-blade foil for smooth, clean-shaven skin, and a stubble trimmer that nails that 5 o’clock shadow look without wrecking your neckline.

Want a little definition without going full lumberjack? The included two length-setting stubble combs help dial in the perfect length. With FlexAdjust™ Technology that adapts to every jawline and a precision trimmer edge for hard-to-reach spots, this thing is engineered for the real world—where your face doesn’t grow hair at perfect right angles.

Read more
You Asked: What’s the most impressive thing you saw at CES?
You Asked CES Editors Cut

On today’s special edition of You Asked, we tracked down each of our editors and put them on the spot to find out what they thought was the most impressive thing they saw at CES 2025 in Early January. Let’s find out what they had to say.
Panasonic Z95B

There’s been some really cool TV tech at CES, but the thing I’m most excited about is the new Panasonic Z95B. Instead of the regular OLED display structure we’ve seen in recent years with MLA technology, this uses a four-layer panel structure. It features individual red, green, and blue layers (two of the latter) for the emissive light.

Read more