User's Guide

there$is$one$in$the$pants$and$one$in$the$shirt.$The$one$in$the$pants$communicates$only$with$the$one$in$
the$shirt,$over$quite$a$short$dis tance,$and$the$one$in$the$shirt$communicates $with$the$app,$which$could$be$
across$the$room.$$So$in$effect,$only$the$shirt$is$emitting$significant$energy$at$all.$$And$even$then,$it's$much$
less$than$other$typical$consumer$devices$(see$Exhibit$A$below)$$
Exhibit A. Typical Power Output of Consumer Devices (in milliwatts)
Cell Phone
500 mW
Wi-Fi Router
100 mW
Fitness Tracker
10 mW
PIVOT Yoga Shirt
100 mW
PIVOT Yoga
Pants
7 mW
source: TuringSense, Inc.
The$second$main$way$to$measure$the$impact$on$humans$is$referred$to$by$engineers$as$the$Specific$
Absorption$Rate,$or$SAR.$$This$measures$the$unit$rate$at$which$the$device's$energy$is$absorbed$from$a$
certain$distance$into$the$body$at$a$specific$point.$The$limit$for$this$in$the$USA,$set$by$the$FCC,$is$1.6$watts$
per$kilogram$(W/kg),$averaged$over$one$gram$of$simulated$biological$tissue.$It's$helpful$to$compare$
common$consumer$devices,$and$note$below$that$PIVOT$Yoga$is$again$substantially$less$than$a$typical$
device$like$a$cell$phone.$$
Exhibit B. Specific Absorption Rates for Consumer Devices