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Continue to ChatEstimote's stickers let you add tiny sensors to just about anything https://www.precog.me/2014/08/25/estimotes-stickers-let-you-add-tiny-sensors-to-just-about-anything/
Estimote's stickers let you add tiny sensors to just about anything https://www.precog.me/2014/08/25/estimotes-stickers-let-you-add-tiny-sensors-to-just-about-anything/