Before joining Apple, Raymann served as a senior scientist at Philips Research working as a lead on various sleep related research projects. He founded the Philips Sleep Experience Laboratory, a non-clinical sleep research facility, and also lead projects researching various aspects of sleep and activity monitoring through the Philips’ Consumer Lifestyle Sleep Research Program and the company’s Brain, Body, and Behavior group. Raymann’s research covers many projects related to monitoring and modulating sleep patterns through non-medical means.
Raymann also has extensive experience in wearable sensors and the miniaturization of sensors related to tracking sleep and alertness. It's believed that he may be helping Apple incorporate such sensors into its rumored iWatch.
Current reports have Apple debuting a new 'Healthbook' app alongside iOS 8 that will be able to monitor and store fitness statistics including steps taken, calories burned, and miles walked. By connecting to the iWatch, 'Healthbook' would also be able to monitor a user's vital signs including blood pressure, hydration levels, heart rate, and possibly glucose levels.
Morgan Stanley analyst Katy Huberty estimates that Apple's rumored iWatch would generate $17.5 billion in sales during its first year, if released.