A method of using a mobile information gateway for medical personnel, the method comprising: capturing information with a first mobile information gateway device , the first mobile information gateway device being wearable by a first user; processing the captured information to identify a body part of the patient in a physical space; mapping a position of the body part of the patient in the physical space to a field of view of the first mobile information gateway device; processing, with the first mobile information gateway device , the captured information to authenticate the identity of the first user; processing, with the first mobile information gateway device , the captured information to authenticate the identity of the patient; characterised in that the method further comprising: determining, with the first mobile information gateway device , that information of the patient can be accessed by the first user based on the identity of the patient and the identity of the first user; processing the authenticated identity of the first user and the authenticated identity of the patient to retrieve information of the patient that the identified first user can view, the retrieved information including information about a prior stage of a medical condition of the patient; overlaying the information about the prior stage of the medical condition of the patient over the body part of the patient on a transparent display based on the mapped position to show a change in the medical condition of the patient from the body part of the patient that can be seen through and the information about the prior stage; and presenting the retrieved information of the patient, with the first mobile information gateway device , in a virtual plane so the retrieved information appears overlaid on the body part of the patient. capturing information with a first mobile information gateway device , the first mobile information gateway device being wearable by a first user; processing the captured information to identify a body part of the patient in a physical space; mapping a position of the body part of the patient in the physical space to a field of view of the first mobile information gateway device; processing, with the first mobile information gateway device , the captured information to authenticate the identity of the first user; processing, with the first mobile information gateway device , the captured information to authenticate the identity of the patient; characterised in that the method further comprising: determining, with the first mobile information gateway device , that information of the patient can be accessed by the first user based on the identity of the patient and the identity of the first user; processing the authenticated identity of the first user and the authenticated identity of the patient to retrieve information of the patient that the identified first user can view, the retrieved information including information about a prior stage of a medical condition of the patient; overlaying the information about the prior stage of the medical condition of the patient over the body part of the patient on a transparent display based on the mapped position to show a change in the medical condition of the patient from the body part of the patient that can be seen through and the information about the prior stage; and presenting the retrieved information of the patient, with the first mobile information gateway device , in a virtual plane so the retrieved information appears overlaid on the body part of the patient. <EOS>