A method of controlling an electronic apparatus worn by a user, by detecting postures of the body of the user, the method comprising: transmitting, by the electronic apparatus, a first signal to a first part of the body of the user; receiving, by the electronic apparatus, second signals through a second part of the body, the second signals corresponding to the first signal that is transmitted through different paths of the body; selecting, by the electronic apparatus, at least some signals from among the second signals; and performing, by the electronic apparatus, a function of the electronic apparatus according to the selected at least some signals if such a function has been set, wherein performing the function according to the selected at least some signals comprises: determining a pattern formed by the selected at least some signals; and performing the function of the electronic apparatus matched to the determined pattern; wherein selecting at least some signals comprises comparing strengths of the second signals received within sub-time periods in one time period with strengths of the second signals received within sub-time periods in another time period; and selecting the second signals received within at least one of the sub-time periods of both the one and another time periods as the at least some signals based on a result of the comparison, wherein a different determined pattern corresponds to each posture of the body detected by the electronic apparatus, and a different function is mapped to each determined pattern. transmitting, by the electronic apparatus, a first signal to a first part of the body of the user; receiving, by the electronic apparatus, second signals through a second part of the body, the second signals corresponding to the first signal that is transmitted through different paths of the body; selecting, by the electronic apparatus, at least some signals from among the second signals; and performing, by the electronic apparatus, a function of the electronic apparatus according to the selected at least some signals if such a function has been set, wherein performing the function according to the selected at least some signals comprises: determining a pattern formed by the selected at least some signals; and performing the function of the electronic apparatus matched to the determined pattern; wherein selecting at least some signals comprises comparing strengths of the second signals received within sub-time periods in one time period with strengths of the second signals received within sub-time periods in another time period; and selecting the second signals received within at least one of the sub-time periods of both the one and another time periods as the at least some signals based on a result of the comparison, wherein a different determined pattern corresponds to each posture of the body detected by the electronic apparatus, and a different function is mapped to each determined pattern. determining a pattern formed by the selected at least some signals; and performing the function of the electronic apparatus matched to the determined pattern; wherein selecting at least some signals comprises comparing strengths of the second signals received within sub-time periods in one time period with strengths of the second signals received within sub-time periods in another time period; and selecting the second signals received within at least one of the sub-time periods of both the one and another time periods as the at least some signals based on a result of the comparison, wherein a different determined pattern corresponds to each posture of the body detected by the electronic apparatus, and a different function is mapped to each determined pattern.