Medi Bracelet Hey I'm Diabetic And Am Thinking Of Buying A 'SOS Talisman' Medi-alert Bracelet/necklace.?

Hey I'm Diabetic and am thinking of buying a 'SOS Talisman' medi-alert bracelet/necklace.? - medi bracelet

In the SOS site that talks about how EMT paramedics and doctors are trained to recognize them bracelets / necklaces, I wonder whether this is true or a load of Mumbo Jumbo company? They are also recognized throughout the world, or only in certain countries?