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A comment on There's an ARM Cortex-M4 with Bluetooth inside a Covid test kit. Parent comment

Re:There's an ARM Cortex-M4 with Bluetooth inside a Covid te... by mozey on Monday December 27, 2021 @12:57AM (#29699838)
For an app that displays positive or negative, wouldn't it be cheaper/easier to use image processing to detect lines on the test?
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Re:There's an ARM Cortex-M4 with Bluetooth inside a Covid te... by hedgehog on Monday December 27, 2021 @01:27AM (#29700012)
Some tests do that but then you end up with a limited list of phones where the camera has been qualified. Better to go all the way to an eye-readable test.
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