Security cameras churn out so much data that they can overwhelm storage facilities and clog networks, but most of that data is pretty boring. Thanks to novel computer vision and machine-learning algorithms, ­VideoIQ's cameras can tell when something suspicious or unusual is happening on screen. At that point, they start recording at a higher resolution and send an alert over the network. Otherwise, they record at such low resolution that they can store months of footage locally, saving disk space and network bandwidth.

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