Skip to main content

Instead of cameras, smart home tech may soon use ultrasound to detect you

MWC 2025
Read our complete coverage of Mobile World Congress

Elliptic Labs, the company that helped Xiaomi’s Mi Mix enjoy a nearly bezel-less display, is taking a stab at presence detection — technology it calls Inner Peace.

It’s a direct follow-up to last year’s Inner Beauty technology, which lets smartphone manufacturers remove the proximity sensor. The technology uses the smartphone’s speaker and microphone, as well as ultrasound, to identify the gesture of moving your phone up to your face. Removal of the sensor means more space inside the device — allowing for different designs like the Xiaomi Mi Mix.

Recommended Videos

Inner Peace is based off the same technology, and Elliptic Labs is aiming it primarily at Amazon’s Echo and the Google Home ecosystem. The software can be programmed to detect if a home’s occupants aren’t moving, or it can be set up notify users of possible intruders in their home.

What’s key is that smart home devices can switch off when they do not detect someone nearby — potentially saving users some money on energy costs. Inner Peace uses ultrasound to enable a “360-degree dome field of view,” and it has no line-of-sight needs. It works in the dark as well.

The company said it’s working with manufacturers to integrate Inner Peace into products, and we can expect to see the technology in Internet of Things products by 2018. It’s unclear if it requires any hardware to work, but it’s unlikely as Inner Beauty was all software.

The company is demonstrating the technology at Mobile World Congress 2017, and we’ll update this article when we get a closer look.

Julian Chokkattu
Mobile and Wearables Editor
Julian is the mobile and wearables editor at Digital Trends, covering smartphones, fitness trackers, smartwatches, and more…
Cost-cutting strips Pixel 9a of the best Gemini AI features in Pixel 9
Person holds Pixel 9a in hand while sitting in a car.

The Pixel 9a has been officially revealed, and while it's an eye candy, there are some visible cutbacks over the more premium Pixel 9 and 9 Pro series phones. The other cutbacks we don't see include lower RAM than the Pixel 9 phones, which can limit the new mid-ranger's ability to run AI applications, despite running the same Tensor G4 chipset.

Google's decision to limit the RAM to 8GB, compared to the 12GB on the more premium Pixel 9 phones, sacrifices its ability to run certain AI tasks locally. ArsTechnica has reported that as a result of the cost-cutting, Pixel 9a runs an "extra extra small" or XXS variant -- instead of the "extra small" variant on Pixel 9 -- of the Gemini Nano 1.0 model that drives on-device AI functions.

Read more
Does the Google Pixel 9a come with a charger? Here’s what’s in the box
A woman holding a purple Google Pixel 9a.

After much speculation in recent months, the Google Pixel 9a has finally been announced. Google's Pixel A series is an excellent choice for those seeking a reliable Android smartphone at a lower price point, and the latest model follows this trend. While it is undeniably part of the Google Pixel 9 series, it has fewer features than its higher-end counterparts.

One question you might have when considering the Pixel 9a is whether it comes with a charger. We’ve got the answer
The Pixel 9a does not come with a charger.
The short answer is that the Pixel 9a does not have a charger. This has become common practice for most smartphones today, including other models in the Pixel 9 series, like the Pixel 9 Pro. While this may be disappointing, it's not surprising.

Read more
Google Pixel 9a vs. Pixel 8a: should you upgrade?
Google Pixel 9a vs Pixel 8a.

Google has released a new budget phone, the Pixel 9a. How does it compare to its predecessor, the Pixel 8a? We've got the answers, and the changes are significant in some ways. In others, not so much. If you have a Pixel 8a and are considering upgrading, read this first.
Google Pixel 9a: vs. Google Pixel 8a: specs

Google Pixel 9a
Google Pixel 8a

Read more