If you feel like you need eyes in the back of your head, there’s a crowdsourcing app for that.

Zensors is a smartphone application that can monitor an area of interest by using a camera, crowdsourced workers and artificial intelligence.

Developed by researchers from Carnegie Mellon University and University of Rochester, the idea behind Zensors is to use any camera in a fixed location to detect changes in what’s being monitored—for instance whether a pet’s food bowl is empty—and automatically notify users.

The developers say it’s a cheap, accessible way to add sensors to the environment, part of the move toward building smart homes and smart cities.

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