Zeo

Zeo manufactures sleep monitors that record electrical activity along the scalp and monitor the user's brain waves.

Zeo was a manufacturer of a sleep monitor in the form of a headband, that contained an EEG unit monitoring the user's brain waves. The sleep monitor was able to detect and record sleep stages, and awake at the optimal time, in light sleep. Using analytics, users were provided with recommendations based on each individual's sleeping patterns. Zeo has stopped operating in [December 2012](http://techcrunch.com/2013/05/22/sleep-tracking-startup-zeo-says-goodnight/), and Q2 2013, it quietly shut down. According to founder Dave Dickinson, problems included the business model, with a 'suboptimal profit margin', invasiveness of the headband device for some user, and friction caused by the user having to log into the website to enter additional data. Moreover, the [sleep data was not necessarily suitable for a small mobile screen](http://mobihealthnews.com/22410/can-personal-health-data-motivate-behavioral-change-it-depends/).