Emfit QS is an advanced sleep sensor | Wearable Tech Watch

Emfit QS is possibly the most-advanced non-medical grade sleep sensor you can buy – and we’re putting it to the test.

Apart from running out of bedside power sockets, we’ve rigged the Emfit unit alongside our Beddit – which until now has been the most accurate device we’ve found in pulling together information from beyond the wall of sleep.

Like Beddit, Emfit QS – which stands for Quantified Self – comes out of the Nordics, in this case, Finland. It’s a slick-looking device which uses ballistocardiography to produce a “graphical representation of repetitive motions of the human body arising from … each heart beat”.

Suitably impressed, it’s fitted underneath a mattress as instructed, and connected to the Wi-Fi. No phone hook-up needed for the Emfit QS, which was our main gripe with Beddit. All your data is uploaded, as you sleep, to the Emfit dashboard.

Impressive sleep metrics dashboard
We’ll have to sleep on it to give you any first impressions, but Emfit promises what looks like a comprehensive dashboard of sleep metrics. As well as tracking sleep patterns, it is logging heart rate variability: Apparently fitter people have more variation in their heart-rate than coach potatoes: There’s more on the Emfit web page.

Emfit’s arrival is timely – our “standard” sleep tracker, a Fitbit Charge HR, has given up the ghost – this time after just 14 months, but conveniently two months beyond the warranty, so no replacement. At $100-plus a throw, it’s too expensive to keep on buying new Fitbits when they inevitably fail, so we’re using Beddit and a Withings Activite smart watch to track sleep. Almost two years after we first tested the Activite, it still seems to have problems with restless sleepers.

Nevertheless, one thing both the Activite and Beddit can do is share data with Apple’s Health app, which makes more sense and gives you a bigger overall picture the more you feed in data from different devices. Fitbit refused to play, Emfit syncs with Under Armour but there’s not yet an app for iOS. Let’s hope that integration with Apple Health is on the Emfit developers’ roadmap.


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