Nevertheless , bearers which work at long and short waves , can transfer data at distances from 2 ,5 till 50 sm passive bearers in frequency range of 900 MHz , work at distance till 7 meters , and in frequency rages - from 30 sm till 2 meters . The 13 .56-MHz tags hold as much as 2 ,000 bits of data , or roughly 30 times the information of 125-KHz tags (Brewin . There is currently no FCC standard for RFID tag frequencies , although manufacturers are...











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