A method, performed by an apparatus, comprising: - obtaining a plurality of fingerprints , wherein each fingerprint comprises a piece of position information, and wherein each fingerprint is gathered in a venue; - determining a first metric based at least partially on the obtained plurality of fingerprints , wherein the first metric is indicative of a quality value of the obtained plurality of fingerprints, wherein the first metric indicates for each piece of position information of the plurality of fingerprints whether or not the quality and/or a quantity of the obtained fingerprints with respect to the piece of position information is sufficient; - determining a second metric based at least partially on the obtained plurality of fingerprints , wherein the second metric is indicative of a quality value of an infrastructure of the venue, wherein the plurality of fingerprints are gathered from one or more radio nodes comprised by the infrastructure, and wherein the second metric indicates for each of the pieces of position information of each of the respective fingerprints whether or not the quality of the infrastructure is sufficient; - determining a third metric indicative of an evaluation of the quality of the infrastructure of the venue based at least partially on the second metric ; and - outputting the first metric, the second metric and/or the third metric ; characterized in that in case the second metric indicates that the quality of the infrastructure is not sufficient, at least a part of the outputted second metric and/or outputted third metric represents that the infrastructure needs to be expanded by adding one or more radio nodes to the infrastructure of the venue, and after the expansion, additional one or more fingerprints need to be obtained. - obtaining a plurality of fingerprints , wherein each fingerprint comprises a piece of position information, and wherein each fingerprint is gathered in a venue; - determining a first metric based at least partially on the obtained plurality of fingerprints , wherein the first metric is indicative of a quality value of the obtained plurality of fingerprints, wherein the first metric indicates for each piece of position information of the plurality of fingerprints whether or not the quality and/or a quantity of the obtained fingerprints with respect to the piece of position information is sufficient; - determining a second metric based at least partially on the obtained plurality of fingerprints , wherein the second metric is indicative of a quality value of an infrastructure of the venue, wherein the plurality of fingerprints are gathered from one or more radio nodes comprised by the infrastructure, and wherein the second metric indicates for each of the pieces of position information of each of the respective fingerprints whether or not the quality of the infrastructure is sufficient; - determining a third metric indicative of an evaluation of the quality of the infrastructure of the venue based at least partially on the second metric ; and - outputting the first metric, the second metric and/or the third metric ; characterized in that in case the second metric indicates that the quality of the infrastructure is not sufficient, at least a part of the outputted second metric and/or outputted third metric represents that the infrastructure needs to be expanded by adding one or more radio nodes to the infrastructure of the venue, and after the expansion, additional one or more fingerprints need to be obtained. <EOS>