| CPC A61L 2/24 (2013.01) [G06K 7/10118 (2013.01); G06K 7/10415 (2013.01); G06K 7/10475 (2013.01); G06Q 50/22 (2013.01); G16H 40/20 (2018.01); G16H 40/63 (2018.01); A61L 2/10 (2013.01); A61L 2/208 (2013.01); A61L 2202/14 (2013.01); A61L 2202/25 (2013.01); Y02A 90/10 (2018.01)] | 19 Claims |

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1. A device, comprising:
an ultraviolet light sensor;
a fluid sensor;
a timer; and
circuitry to activate the timer, wherein the circuitry is configured to:
start tracking a first duration upon receipt of a unique signal from the ultraviolet light sensor; and
start tracking a second duration upon receipt of a different unique signal from the fluid sensor.
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