What Type of Sensor Can Measure the Distance Between Hands Accurately?

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For measuring the distance between hands, an ultrasonic sensor is suggested, using a speaker in one hand and a microphone in the other to avoid interference from ambient noise. The Sharp GP2D15 IR distance sensor is another option, although it may not be ideal for environments with existing sound. The project aims to track hand movements in 3D for music production, necessitating accurate distance measurements. Concerns about the IR sensor's effectiveness in a noisy setting were raised, prompting the search for alternative solutions. Further reading on sensor technologies and their applications in similar projects is encouraged.
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I am beginning a new project in which I plan on using the distance between my hands as a measurement. Being new to electrical engineering, I am not quite sure of what type of sensor to use to accomplish this. I would the sensor in one hand to only pick up the receiver in the other hand, not just pick up my other hand i.e. IR sensor. Please be descriptive and if possible suggest some further reading I could do on this subject.

Thank you
 
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If you insist on having a transmit/receive sort of sensor maybe you could use audio or ultra-sonic pings: a speaker in one hand and a mic in the other?

Otherwise I would have recommended something like the Sharp GP2D15 IR distance measuring sensor...
 
I was thinking using audio to accomplish this but I would like to use this project for music production, hence there would be a lot of sound already in the room. I would like to be able to move my hands in a 3D fashion and be able to know the distance between them at all times.

It wouldn't have to be a transmit/receive system, I just thought it would be easiest. Any suggestions welcomed.

I should have included that in my first post, Sorry

Thanks for the quick response schip666,

Cheers
 
why not the IR system?
 

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