The present invention is directed to the prevention of invalid access and inappropriate information transfer by limiting the accessible range to the information resource on a radio network. In one embodiment, a method of providing access to an information unit by a wireless unit comprises providing a first position information containing an access enabled area for the wireless unit, wherein the access enabled area falls within a range of communicable area of a wireless access point; and obtaining a second position information containing a current position of the wireless unit. If the current position of the wireless unit is within the access enabled area for the wireless unit, access if permitting to the information unit by the wireless unit. If the current position of the wireless unit is outside the access enabled area for the wireless unit, access to the information unit is denied by the wireless unit even if the current position of the wireless unit is within the range of communicable area of the access point.