Patent ID: 8311587

Claim:
A communication terminal comprising: a case; a display attached to said case; an antenna for Near Field Communication contained in said case; and a displayer that displays a position of said antenna on said display, wherein said displayer displays a first assist mark representing the position of said antenna with respect to said display in a case that the position of said antenna is included within a display range of said display; a determiner for determining whether or not the position of said antenna is included within a display range of said display, wherein said displayer includes a first displayer that displays the first assist mark representing the position of said antenna with respect to said display in a case that the determination result by said determiner is affirmative, wherein said case includes said first case and a second case, and further comprising a coupler that couples said first case and said second case such that a state of said first case with respect to said second case can be shifted, a sensor that detects a state of said first case with respect to said second case and providing an output, and a position specifier that specifies a position of said antenna with respect to said case on the basis of an output from said sensor, wherein said determiner performs a determination on the basis of the position specified by said position specifier.