I think this could be worked out using statistics. If you have 5 cells phones w/in detection vicinity and all 5 cells phones cause an alarm, you would be fairly confident that you have a true positive. If just one cell phone goes off, and you know others are close enough, then you can probably safely ignore than single alarm.
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I think this could be worked out using statistics. If you have 5 cells phones w/in detection vicinity and all 5 cells phones cause an alarm, you would be fairly confident that you have a true positive. If just one cell phone goes off, and you know others are close enough, then you can probably safely ignore than single alarm.