A monitoring device wearable by a person to be monitored, comprising: one or more sensing means for sensing cardio, respiratory, physiological and/or other information from the person； processing means for analysing the sensed information； memory means for storing the sensed and/or analysed information； and communication means for transmitting at least the analysed information. At least one waveform acquired from the sensed cardio, respiratory, physiological and/or other information is digitised in real-time； analysis of the sensed and/or digitised information is performed in real-time and a welfare indication of the person computed in real-time； and the computed welfare indication of the person is transmitted by the communication means and/or stored in the memory means.
