1. A dull black object not going to work so good.The proximity sensor is not fast enough for fast moving objects.
2. Maybe it just doesn't work on a galaxy S10It did not work as expected... no reading come out... maybe the sensor issue.. I used samsung C9ProYou read the facts then it works.
3. For that, use a rpm meter that uses microphone or camera.Couldn't you make this with using Ambient sensor ? i think Ambient sensor is More Usable/Responsible for fast moving/rotating objects.Literally does nothing.
4. It's only as good as your phone's proximity sensor.
5. What is a proximity sensor? Originally used to turn off your screen during a phone call when you put your phone up to your ear.
6. Tried paper in front of IR sensor.
7. Nowadays used for various bits like in-pocket detection to keep the screen off.
8. Not working.. if not working then why gives you stars????Good app.
9. The majority of prox sensors make use of infrared light.
10. Dashboard could be more user friendlyWow it works nicely.
11. Work perfectly.