Arman,
This is a unique request because the temperature of the body being measured will remain the same regardless of being measured at 5 or 10 cm and therefore any variation of the measured temperature with distance is usually an unintended consequence. The TMP006 is the only sensor in our portfolio which may exhibit some distance variation as it is the only non-contact temperature sensor we currently offer. The TMP006 is an IR thermopile, therefore it determines the temperature of an object by measuring the intensity of IR energy it receives. Ideally, if the object the TMP006 was pointed at was a point source with a spherical radiation pattern, then the intensity of the IR would decay at a rate of 1/R^2 with R being the distance to the point source. Unfortunately, 5 to 10 cm is within the "nearfield" of the human body, meaning that at this distance the body is not a point source, and intensity of the received IR energy will not decay in a 1/R^2 manner (I would venture that at this close of a distance the IR radiated by the body is better approximated by a plane wave). Furthermore, the TMP006 has a very large viewing area, and therefore the further it is from the object to be measured, the more external objects contribute to the measured temperature. In short, the TMP006 would not be a reliable method to perform this measurement.