Swedish start-up Memoto’s tiny clip-on camera snaps a picture every 30 seconds, stores the images and then applies algorithms to find the most interesting.

“What you get in the end is, in your app, a timeline of key frames which represent moments that you experience throughout your day,” CEO Martin Källström tells MIT Technology Review.

The “life-logging” device, as he calls it, may be a cost-effective photographic record—the device is $279, plus a monthly fee for online photo storage—and, perhaps, a tool for marketing researchers whose methodology can incorporate ethnography.