Microsoft's untethered personal health record HealthVault now is accessible via mobile devices, announced Sean Nolan, chief architect of the Microsoft Health Solutions Group, on his Family Health Guy blog last week. Currently, a software development kit and sample apps only are available for Windows Phone 7, but SDKs for Apple iOS and Google Android aren't far behind. "It's become completely obvious that mobile devices are rapidly taking over as the primary way that folks communicate and compute in their daily lives," Nolan wrote. "This makes complete sense for health, where virtually all meaningful activity happens away from our laptops: office visits, emergencies, workouts, daily glucose testing, sleeping, you name it." Blog post