Customers pay $119 for Swarm Tiles like the one shown. Tiles are low-power modems that can be embedded in devices. In addition, Swarm customers pay $5 per device per month for Swarm service.

With 81 miniature satellites in orbit, internet-of-things startup Swarm announced the start of its commercial data service.

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Debra Werner is a correspondent for SpaceNews based in San Francisco. Debra earned a bachelor’s degree in communications from the University of California, Berkeley, and a master’s degree in Journalism from Northwestern University. She is a recipient...