Sleep tech data collected by firms raises privacy concerns


Smart beds and apps that track your sleep could be gathering valuable health data that can be sold to third-parties, experts have warned.

Sleep technology uses sensors to track everything, from when you toss and turn  to when you wake up – and they might even be able to tell when you’re having sex.

The smart devices are designed to give their users insight into how they sleep and how their heart rate, respiration and movements have changed in the night.

Researchers say they are concerned about what the firms collecting this personal data go on to do with it.

Where this data goes and whether it can be exploited by marketing companies or business partners of the sleep tech firms is still unclear, they say.

Sleep aid technology industry is currently booming, with a plethora of companies releasing a host of gadgets and innovations that promote a good night’s sleep.

Sleep Number, a company that makes smart beds, collects more than eight billion biometric data points every night.

This is gathered each second and sent via an app through the internet to the company’s servers. 

‘We don’t know what happens to all that data,’ said Burcu Kilic, director of the digital rights program at Public Citizen, an advocacy group in Washington.

The information ‘is also relevant and important to pharmaceutical companies and those that make hospital-related technology,’ Mr Kilic said. 

This data gives the firm ‘the intelligence to be able to continue to feed our algorithms,’ CEO Shelly Ibach told attendees at a health conference in San Diego.

Analysing all that personal data, Ibach continued, not only helps consumers learn more about their health, but also aids the company’s efforts to make a better product. 

The company says it goes to great lengths to protect its customers’ data.

‘To be clear, Sleep Number does not share any Sleep IQ or biometric’ data outside the company, a Sleep Number spokeswoman told San Franciso-based not for profit KHN, who first reported the finding.

The company’s privacy policy suggests this is not the case, however.

‘Sleep Number can ”exploit, share and use for any purpose” personal information with names or addresses withheld, known as ”de-identified” data,’ it states.

Biometric data ‘may’ also be shared with marketing companies or business partners, the document says.

‘They, in turn, could send out pitches for Sleep Number or offers to participate in partner product loyalty programs. The policy also says personal information could be given to partners for ‘research, analysis or administering surveys,’ it says.

Mail Online have contacted Sleep Number for comment but they were unavailable at the time of publication. 

‘I can’t imagine it wouldn’t be possible to look at that data and say, ‘Oh, that looks like sex,’ said Lee Tien, senior staff attorney at the Electronic Frontier Foundation, a digital privacy and free speech company.

‘The raw data may not tell you that, but what they do is take the raw data and try to interpret it.’

Smart beds and other types of sleep trackers have different sensors. 

Sleep Number beds have movement sensors, for instance, which can inflate, deflate or otherwise adjust the mattress for comfort.

Some sleep apps and devices made by other firms even use microphones to track snoring.

Sleep Number beds gather data through tiny changes in the mattress’s air pressure, Pete Bils, Sleep Number’s vice president of sleep science and research said.

‘The more you use the bed, the more it knows you,’ he said. 


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