If I have a telephone placing on a table.
I would like to detect whether a person have picked up the phone or not.
If he/she pick up the phone, it will call two different computer to run the program.
May I know which type of sensor I should use in detecting this case?
The sensor should not be seen by the person who pick up the phone.
Thank you very much.
I would like to detect whether a person have picked up the phone or not.
If he/she pick up the phone, it will call two different computer to run the program.
May I know which type of sensor I should use in detecting this case?
The sensor should not be seen by the person who pick up the phone.
Thank you very much.