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Need a quick answer? Try out hDrop Assistant at the bottom of the page.
Have you downloaded the hDrop App? Make sure to follow the in-app instructions, as the device connects only through the hDrop App and not through your phone’s Bluetooth settings. Make sure you charge the device for at least 10 minutes to activate it.
It can happen. If this happens, add a little bit of water to the tip of your finger (just a tiny drop!), and you will get a reading. You should not do this often, but it will solve it short term. Also, consider warming your hands a little bit, sometimes really cold hands are hard to read for the sensor.