A device for identifying or tracking tools, the device comprising: a first metallic wall delimiting a first area wherein a first tool including an RFID tag can be placed; a first antenna for communicating with the RFID tag whenever the first tool is in the first area, and wherein said first antenna is a slot antenna cut out in the first metallic wall; characterized by a first control unit (22, 24) configured to set the first antenna with a first frequency value and a first power value fulfilling the following criteria: the first frequency value is selected in a predetermined range of RFID frequencies and maximizes the power of a response signal emitted by the RFID tag in response to a request signal emitted by the first antenna, the first power value is a minimum value enabling the first antenna configured with the selected frequency value to effectively detect the response signal such that an information about the first tool can be extracted therefrom; and wherein the first control unit (22, 24) is configured to perform the following steps: at a first time at which the first tool is in the first area, determining the first frequency value and the first power value by testing different values in the predetermined range of RFID frequencies and different values in a power range, at a second time after the first time, setting the first antenna with the first frequency value and the first power value determined at the first time, attempting to extract the information about the first tool from the first radio signal, and repeating the determination step only if the attempt fails. a first metallic wall delimiting a first area wherein a first tool including an RFID tag can be placed; a first antenna for communicating with the RFID tag whenever the first tool is in the first area, and wherein said first antenna is a slot antenna cut out in the first metallic wall; characterized by a first control unit (22, 24) configured to set the first antenna with a first frequency value and a first power value fulfilling the following criteria: the first frequency value is selected in a predetermined range of RFID frequencies and maximizes the power of a response signal emitted by the RFID tag in response to a request signal emitted by the first antenna, the first power value is a minimum value enabling the first antenna configured with the selected frequency value to effectively detect the response signal such that an information about the first tool can be extracted therefrom; and the first frequency value is selected in a predetermined range of RFID frequencies and maximizes the power of a response signal emitted by the RFID tag in response to a request signal emitted by the first antenna, the first power value is a minimum value enabling the first antenna configured with the selected frequency value to effectively detect the response signal such that an information about the first tool can be extracted therefrom; and wherein the first control unit (22, 24) is configured to perform the following steps: at a first time at which the first tool is in the first area, determining the first frequency value and the first power value by testing different values in the predetermined range of RFID frequencies and different values in a power range, at a second time after the first time, setting the first antenna with the first frequency value and the first power value determined at the first time, attempting to extract the information about the first tool from the first radio signal, and repeating the determination step only if the attempt fails. at a first time at which the first tool is in the first area, determining the first frequency value and the first power value by testing different values in the predetermined range of RFID frequencies and different values in a power range, at a second time after the first time, setting the first antenna with the first frequency value and the first power value determined at the first time, attempting to extract the information about the first tool from the first radio signal, and repeating the determination step only if the attempt fails.