A medical measuring device (1, 30) comprising: a housing configured to mount thereon a biosensor in an attachable and detachable manner, the biosensor being configured to have a liquid sample of a biological object deposited thereon, a measuring component operable to measure biological information from the liquid sample of the biological object; a recording component operable to store a result measured by the measuring component; an information protection component operable to determine whether or not to prohibit a readout of personal information data stored in the recording component; and a controller operable to control a permission or a prohibition of the readout of the personal information data based on a determination result made by the information protection component; and a communication component configured to perform a wireless communication with a plurality of access points (22a, 22b, 22c); characterized in that the communication component is operable to perform a wireless communication with the plurality of access points (22a,22b,22c) in a predetermined facility, and when the communication component is not able to perform a wireless communication with any of the access points (22a,22b,22c), or when an address of the connected access points (22a, 22b, 22c) does not correspond to any of a plurality of registered addresses stored in the recording component, the information protection component is operable to determine that it is used in an unfavorable situation to prohibit the readout of the personal information data stored in the recording component, and the controller is operable to execute the prohibition of the read out of the personal information data. a housing configured to mount thereon a biosensor in an attachable and detachable manner, the biosensor being configured to have a liquid sample of a biological object deposited thereon, a measuring component operable to measure biological information from the liquid sample of the biological object; a recording component operable to store a result measured by the measuring component; an information protection component operable to determine whether or not to prohibit a readout of personal information data stored in the recording component; and a controller operable to control a permission or a prohibition of the readout of the personal information data based on a determination result made by the information protection component; and a communication component configured to perform a wireless communication with a plurality of access points (22a, 22b, 22c); characterized in that the communication component is operable to perform a wireless communication with the plurality of access points (22a,22b,22c) in a predetermined facility, and when the communication component is not able to perform a wireless communication with any of the access points (22a,22b,22c), or when an address of the connected access points (22a, 22b, 22c) does not correspond to any of a plurality of registered addresses stored in the recording component, the information protection component is operable to determine that it is used in an unfavorable situation to prohibit the readout of the personal information data stored in the recording component, and the controller is operable to execute the prohibition of the read out of the personal information data.