The only problem my hubby has had is getting thru the airport security with his machine. It always sets off the alarms and they have to go thru all of his stuff. It is the battery in it that sets the alarms off. He takes letters from his doctor for his syringes and all of his medication. He also has a defibulator/pacer implanted, he can go thru the x-ray machines, but if he sets off an alarm they cannot use the wand on him, it will interfer with the defib. He also carries a card and a letter for that.