18  EP 1 499 940 B1 17  that can, for instance, begiven by an XMLsignaturewith respect to an X509 certificate. In another example, the requesting entity 50 and location entity 40 (or 42) may have exchangedspecial keysbeforehandand use those. In a further example, one may want to use symmetric keys only (at least besides HTTPS), but the requesting entity50 and locationentity40 havenotexchanged keys a priori. This is also possible, but somewhat decreases anonymity or requires stronger trust of different entities in each other. In particular, with reference to Fig. 2, the contact step IVa could be extended by a Kerberos key exchange protocol for the location entity 40andrequest- ingentity50viaa chainof intermediaries.Withreference to Fig. 3, either the location entity 40 can start the same protocol, or the client application 30 can be redirected througha chain ofintermediariesthateachgrant ita new "ticket"with the identity- related information IRI (here typ- ically authentication information) based on the previous ticket, similar to Kerberos but within HTTP instead of as key exchange. [0059] Any disclosed embodiment may be combined with one or several of the other embodiments shown and/or described. This is also possible for one or more features of the embodiments. [0060] The present invention can be realized in hard- ware, software, or a combination of hardware and soft- ware. Any kind of computer system - or other apparatus adapted for carrying out the method described herein - issuited.A typical combination of hardwareand software couldbea general purpose computersystemwitha com- puter program that, when being loaded and executed, controls the computer system such that it carries out the methods described herein. Thepresentinventioncan al- so be embedded in a computer program product, which comprises all the features enabling the implementation of the methodsdescribedherein,andwhich - whenload- ed in a computersystem-isable tocarryout these meth- ods. [0061] Computer program means or computer pro- graminthe present context mean any expression, inany language, code or notation, of a set of instructions in- tendedtocauseasystemhaving an information process- ing capability to perform a particular function either di- rectlyor after either orboth ofthefollowing a) conversion to another language, code or notation; b) reproduction in a different material form. a location-request step (II) initiated by the re- questing entity (50) for requesting from a client application (30) that is executed on a computer a location information that corresponds to a lo- cation entity (40) possessing the identity- related information , wherein the location information is sent to the requesting entity (50) in a sub-step (IIc) of the location request step (II); a redirecting step (III) for connecting the client application (30) tothe location entity (40)in order to instruct the location entity (40) to transfer the identity-relatedinformation to the requesting en- tity (50); and an acquiring step (IV) for obtaining the identity- related information, the acquiring step compris- ing a contact step (IVa) wherein the location entity (40) contacts the requesting entity (50); a request step (IVc) wherein the requesting en- tity (50) requeststheidentity-related information from the location entity; and a receiving step (IVe) wherein the requesting entity (50) receives the identity-related informa- tion from the location entity (40), or the acquiring step (IV) comprising only a redirecting sub-step(IVg) ofredirectingthe lo- cation entity (40) via the client application (30) to the requesting entity (50) and thereby trans- mitting the identity-related information to the re- questing entity (50). 2. The method according to claim 1, wherein the trans- port protocolusedbetweenthe requestingentity(50) and the client application (30), and between the lo- cation entity (40) and the client application (30) is a secure hyper text transfer protocol. 3. The method according to any preceding claim, wherein the location information is relative to the lo- cation of the client application (30). 4. The method according to any preceding claim, fur- ther comprising accepting by the requesting entity (50) the identity-related information together with an authentication from the location entity (40) under a location entity pseudonym, wherein the identity-re- lated information corresponds to a personal pseu- donym of a person (20). 5. The method according to any preceding claim, fur- ther comprising transmitting by the requesting entity (50) a server policy for use of the identity-related information . 6. The method according to claim 1, wherein the ac- quiring step (IV) further comprises deciding by the locationentity(40) onwhat part oftheidentity-related information requested in the request step (IVc) to be transferred on the basis of a predefined policy. 7. The method according to claim 6, wherein the re- sponse step (IVe) further comprises transmitting by thelocation entity(40) a part of thepredefinedpolicy. 1. Method for providing an identity-related information to a requesting entity (50), said method comprising: Claims 10