by giving up a maximum precision as long as latitude and longitude has certain relation ship to converted integer value it is sufficient for this invention fig1 show an example of transformed code with conditions defined above hereinafter referred to as u2018 locapoint u2019 locapoint and latitude or longitude can be converted into integer value and convertible each other fig2 shows a format of locapoint using a letter u2018 a u2019 to represents 26 th notation digit u2018 n u2019 to represents decimal notation format of locapoint can be expressed as a fixed length format u2018 aan aan aan aan u2019 locapoint is consisted of four parts those are delimited by period from left to right each parts represents information of higher digits of latitude higher digits of longitude lower digits of latitude and lower digits of longitude higher digits parts can be used as a coordinate of wide area since the pattern of locapoint is unique this format can be recognized as a code that shows geographic location even if it was not mentioned it is not likely to misrecognize as a telephone number email address or any other data format since computer can easily capture the pattern of locapoint it is easy to make an automatic connection to map navigation system or geographic application to point a precise geographic location latitude and longitude is not sufficient in the strict sense to define a datum is essential various datum are used in many countries if define the datum of locapoint as specific.