How Does an Optical Fingerprint Sensor Work?

[@AdvaitSaravade]

I did not know about the evanescent field before this. Not only that, you've also shown how it's actually used in fingerprint sensors without confusing at all. Super easy to follow, yes. Thanks for teaching me something so interesting.

[@lihi7863]

thank you!! i am doing a project and was so lost about how it works!! tysm

[@debiprasadpanda1395]

Great video and great way of explaining things...please make more educational videos.

[@austinlassell7001]

well done video, super easy to follow - cool stuff!

[@sanjeen2503]

Great video.

[@PPanos1968]

The earth magnetic field is actually reversed than shown in 0:37. The north pole is in the south. This is why the magnetic north pole of the compass needle turns to the geographic north pole, because it's the earth's magnetic south pole there.

[@charlietalks2605]

Thank you very much this video really helped me in doing my project

[@sgokul5564]

Thank you mam 🙏

[@abdulkerimhejazi6116]

Thank you for this information 👍

[@artib4158]

The phenomenon here is total internal reflection not frustrated total internal reflection

[@AhmadRaza-gl5xt]

Thanks

[@chetandalwala3213]

This is fake video

[@onman14]

please elaborate