Actually I know a little something about those things. Microsoft put out an experimental version of it about 10 years ago. It was called Sensecam and also took photos every 30 seconds. Early research involved taking seniors with various stages of Alzheimers on a trip, say, and testing their memory of the trip. Then they'd show the pictures (sometimes with narrative, sometimes edited http://research.microsoft.com/en-us/um/cambridge/projects/sensecam/memory.htm It's interesting to see that a version of this is now available to everyone at only $130. After the original research, no one seemed to know quite what to do with it. Now they do.Without any aids to recall, Mrs. B typically completely forgets everything about an event after five days or less. However, during the course of this period of assisted recall using SenseCam, Mrs. B’s memory for the event steadily increased, and after two weeks she could recall around 80 percent of the event in question. What is perhaps more remarkable is that following the two-week period of aided recall, Mrs. B appears to have a lasting ability to recall the event even without reviewing the images.
They still don't know what to do with it. It was a GoPro before there were GoPros, a dashcam before dashcams. The issue is that scientists said "we can record every minute of your life - now how do we make people want to do that?" rather than finding a problem and proposing a solution. I'm not opposed to giving memory aids to Alzheimer's sufferers but Microsoft's study had an N of 1 and was conducted against a diary. That the study was done ten years ago and didn't really lead to much further research is telling, I think; basically, Microsoft demonstrated that making an Alzheimer's patient review an hour-long event for an hour every two days keeps that event in short term memory for as long as the patient is reviewing the photos.
Yeah, that research went nowhere and was abandoned. Given that cops can wear a bodycam and have it running (or not) when they assault or save people, the 30-second picture doesn't seem to have much use. Imagine a cop wearing a Narrative Clip during an interrogation.