Methods, systems and machine readable media for synchronising three or more electronic devices.In one exemplary method of synchronising three or more electronic devices, said method comprises: a) selecting at least one category of record for synchronisation; b) storing an original value and a changed value of each changed record from a selected record category; c) establishing an electronic connection between at least two devices; d) comparing the records of the selected record categories; e) determining any changed record; f) identifying the updated device with the changed record having an original value the same as the value of the record in the other previous device; and g) changing the value of the record in the previous device to the changed value.