1. A biometric information input apparatus comprising: an image capturing camera device configured to obtain a captured image of a biological object; a memory device configured to store a program; and a central processing unit configured to execute the program to perform: obtaining distances between a position of an image capturing camera device and a plurality of points on a surface of a biological object from an image captured by the image capturing camera device to calculate an average value of the obtained distances; comparing each of the obtained distances with the calculated average value of the obtained distances to detect whether there is a pliable part on the surface of the biological object; and extracting biometric information from the captured image if the pliable part is not detected.