I have a feeling it's already been done. Saw a history channel show where we had something like that in a Russian ambassador's office during the cold war. They figured it out after weighting the copier against another of the same model and found the grams worth of weight difference. That and the reason they did it was that the person they had come in only serviced that one copier... and was sloppy and unprofessional... go figure... your government dollars at work folks.
I have a feeling it's already been done. Saw a history channel show where we had something like that in a Russian ambassador's office during the cold war. They figured it out after weighting the copier against another of the same model and found the grams worth of weight difference. That and the reason they did it was that the person they had come in only serviced that one copier... and was sloppy and unprofessional... go figure... your government dollars at work folks.