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This invention describes a drinking cup or vessel that has a built-in sensor to detect substances in the liquid it holds. The cup is designed with a special area, marked by a different color, shape, or texture, to encourage the user to drink from that specific spot. The sensor can then communicate its findings to another device, and the cup itself might also signal when it detects something or when fluid is present.
Why it matters: Filed before widespread low-power wireless communication and miniaturized chemical sensors were common. Today, advanced chemical detection and seamless smartphone integration are significantly more feasible and cost-effective.
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