Is PPM Really Passive?

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radiodr1
Posts: 59
Joined: Thu Feb 12, 2009 2:02 am

Is PPM Really Passive?

Post by radiodr1 » Thu Feb 11, 2010 11:55 am

Passive connotes that participants are somehow uninvolved in the process. But they have to remember to carry the meter, keep it in motion and dock it. So PPM is really passive, but intrusive.

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