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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
He would need specialized hardware and some code examples, I was looking at something like this for a personal customized U2F key: https://github.com/makerdiary/nrf52-u2f
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