Wearable device and method for measuring human body impedance

A wearable device comprising:

• a housing comprising a first surface configured to come into contact with a first portion of a human body of a user when worn, a second surface configured to come into contact with a portion differ from the first portion of the human body in case that the first surface comes into contact with the first portion, and a lateral surface surrounding at least a portion of a space between the first surface and the second surface;
• a biometric sensor disposed inside the housing and comprising a first electrode and a second electrode exposed through the first surface and a third electrode and a fourth electrode exposed through at least one of the second surface and the lateral surface;
• a voltage measurement device configured to measure a voltage at both ends of the first electrode and the fourth electrode caused by a current applied to the human body through the second electrode and the third electrode;
• and
• a processor electrically connected to the biometric sensor,
• wherein the processor is configured to:
• detect, through the biometric sensor, that the first portion of the human body comes into contact with the first electrode and the second electrode;
• detect, through the biometric sensor, that a second portion of the human body comes into contact with the third electrode and the fourth electrode;
• acquire impedance phase information of the human body based on the current applied to the human body through the second electrode and the third electrode and the voltage measured at the both ends of the first electrode and the fourth electrode;
• determine whether the acquired impedance phase information falls within a predetermined range;
• and
• in case that the acquired impedance information deviates from the predetermined range, provide a notification related to biometric data measurement.