New Attitudes to UHF Revealed in Tokyo and Cambridge UK

That period is now over, because some disappointments have restricted the vision to a narrower range of applications. The Japanese Government has been concerned that this frequency can interfere with heart pacemakers, so it now requires sites to display notices asking people with pacemakers to keep at least one meter from such tags. That has made one major store chain cancel a UHF trial. Another setback has been radio regulations sometimes permitting only narrow bandwidth, because this can cause a problem with readers interfering with each other and designers being unable to escape interference from other devices.