Maybe the RFID chips in question are just too low end ? I have read an article about race timing chips runners have in their badges during a marathon and they

Maybe the RFID chips in question are just too low end ? I have read an article about race timing chips runners have in their badges during a marathon and they can apparently handle large number of runners, about 50 per second: http://www.righto.com/2016/06/inside-tiny-rfid-chip-that-runs-san.html http://www.righto.com/2016/06/inside-tiny-rfid-chip-that-run...