Smartwatches collect data like heart rate and movement—how do they process this information? Is it local sensor data or cloud-based analysis that's more effective? How do they balance energy consumption with performance?
How do smartwatches analyze sensor data?
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I think the most interesting part is whether those sensor data are analyzed instantly or sent to the cloud for evaluation. For example, do heart rate fluctuations show up on the screen immediately, while sleep data is only reported after being collected throughout the night?