Coordinate measuring system for secure and intelligent coupling and binding of a mobile terminal to a coordinate measuring machine arranged in stationary fashion, comprising: a coordinate measuring machine arranged in stationary fashion, comprising: a measuring system; an evaluation and control unit with a first data processing unit; a first memory unit for storing data, parameters and programs; and a first transceiver unit for wireless communication; and a mobile terminal arranged so as to be physically separated from and movable with respect to the coordinate measuring machine and configured to operate the coordinate measuring machine and/or display data of the coordinate measuring machine by way of a user, wherein the mobile terminal comprises: a second data processing unit; a second memory unit for storing data and programs; and a second transceiver unit for wireless communication; wherein the coordinate measuring machine and the mobile terminal are configured to establish an authenticated wireless connection for exchanging data between the coordinate measuring machine and the mobile terminal; wherein an identifier that uniquely identifies the coordinate measuring machine and a dynamic first key are assigned to the coordinate measuring machine, wherein the dynamic first key represents an access authorization, with different levels of access authorization resulting in different first keys; wherein the dynamic first key is coordinate measuring machine-specific and wherein the identifier is a coordinate measuring machine-specific static second key; wherein the mobile terminal is further configured to query the dynamic first key from the user, the dynamic first key being used for authentication purposes during the establishment of the wireless connection; wherein the evaluation and control unit is configured to generate a coordinate measuring machine-specific authorization key in accordance with a generation prescription saved in the first memory unit and on the basis of the dynamic first key and the static second key, and to save the generated authorization key in the first memory unit, the wireless connection being authenticated on the basis of the authorization key generated thus; and wherein the mobile terminal is configured to query the static second key and then generate the same authorization key in accordance with the generation prescription, which is also saved in the second memory unit, and with knowledge of the dynamic first key and the static second key, and save said same authorization key in the second memory unit for the authenticated establishment of the wireless connection. a coordinate measuring machine arranged in stationary fashion, comprising: a measuring system; an evaluation and control unit with a first data processing unit; a first memory unit for storing data, parameters and programs; and a first transceiver unit for wireless communication; and a mobile terminal arranged so as to be physically separated from and movable with respect to the coordinate measuring machine and configured to operate the coordinate measuring machine and/or display data of the coordinate measuring machine by way of a user, wherein the mobile terminal comprises: a second data processing unit; a second memory unit for storing data and programs; and a second transceiver unit for wireless communication; wherein the coordinate measuring machine and the mobile terminal are configured to establish an authenticated wireless connection for exchanging data between the coordinate measuring machine and the mobile terminal; wherein an identifier that uniquely identifies the coordinate measuring machine and a dynamic first key are assigned to the coordinate measuring machine, wherein the dynamic first key represents an access authorization, with different levels of access authorization resulting in different first keys; wherein the dynamic first key is coordinate measuring machine-specific and wherein the identifier is a coordinate measuring machine-specific static second key; wherein the mobile terminal is further configured to query the dynamic first key from the user, the dynamic first key being used for authentication purposes during the establishment of the wireless connection; wherein the evaluation and control unit is configured to generate a coordinate measuring machine-specific authorization key in accordance with a generation prescription saved in the first memory unit and on the basis of the dynamic first key and the static second key, and to save the generated authorization key in the first memory unit, the wireless connection being authenticated on the basis of the authorization key generated thus; and wherein the mobile terminal is configured to query the static second key and then generate the same authorization key in accordance with the generation prescription, which is also saved in the second memory unit, and with knowledge of the dynamic first key and the static second key, and save said same authorization key in the second memory unit for the authenticated establishment of the wireless connection.