1. An apparatus for integrated positioning, the apparatus comprising: a positioning information sensor configured to sense positioning-associated information that is in proximity to the apparatus, wherein the positioning-associated information is sensed using a plurality of different sensing technologies; a classifier configured to classify the sensed positioning-associated information into at least two types of information based on an accuracy, wherein the accuracy is based on a type of the plurality of different sensing technologies that are used to provide the positioning-associated information to the sensor; and a location estimator configured to estimate the location of the apparatus sequentially from the at least two types of information, wherein each of the at least two types of information indicates a different error range between the estimated location of the apparatus and an actual location of the apparatus.