[powera]

How is a phone supposed to passively collect information about sexual positions?

"By asking about sexual positions and female orgasms, for example, the app is collecting data on oft-cited but little-researched possible factors in successful conception. The founders say that physicians have already signed on to use this data in studies. And eventually, Levchin said, they hope to make the data collection totally passive (by using a combination of phone sensors and specialized hardware) so that you don’t even have to take the trouble of entering any numbers yourself."

[wizzard]

Simple, just prop up your phone and video yourselves having sex. Like a Kinect, it can detect the position of your bodies. And it can analyze the audio to determine if the female orgasmed.

And then the video will be automatically uploaded to the NSA.

[btilly]

How much data does a fitbit collect?

It would take some guesswork. But there are fairly characteristic rhythmic motions in sex that you can look for. The various angles and rhythm is correlated with the sexual position. Comparing hand-entered data with actual data would let you discover these correlations.

(More creepy would be listening to the microphone and guessing from that...)