"This is a wonderful product. This works on a MAC or a PC. It is easy to upload information, and it great for anyone. You can keep all of your medical information in one spot. It is not bulky like a medical bracelet. This was a great gadget gift for my father-in-law. He is an avid skier and has a lot of medical history. This would help an EMT or doctor if he was alone and unable to talk to the care provider, so it was an exciting gift to him."