After going to the hospital to accompany a friend bought a bit of cold medicine back to friends with her mobile phone box scan code, I asked her friends to do the above encoding and kit, friends told me that this encoding is a sweep can see the whole process from the production of medicine to the hospital, listening to friends talk about me ask friends really so magical? A friend told me that is RFID tracking system you can see, the friend said she had filled the RFID mobile phone tracking system said she is now what you can clearly know this thing from production to process everything in her hand. Listening to a friend to say things I said that the rfid tracking system husband is too easy to use.