An apparatus configured to perform a test procedure for measuring vibrotactile perception of a subject, said apparatus comprising: a vibration probe with an end portion arranged for engagement by a body part of the subject, a vibrator coupled to the vibration probe and operable to impart a longitudinal vibration to the vibration probe, a force sensor coupled to the vibration probe, said force sensor configured to provide a second output signal ( f) indicative of an application force onto the end portion, an input device, which allows the subject to signal when the longitudinal vibration of the vibration probe is sensed by the subject, a control unit configured to perform the test procedure by operating the vibrator to impart the longitudinal vibration to the vibration probe at different intensities at one or more frequencies, and receiving an input signal from the input device indicating when longitudinal vibration is sensed by the subject, the control unit being further configured to monitor, during the test procedure, the second output signal ( f) to ensure that the application force is adequate, characterized in that the apparatus further comprises a contactless temperature sensor arranged to face the body part when engaged with the end portion, said contactless temperature sensor configured to provide a first output signal ( T IR), the control unit is configured to, before the test procedure and as a function of the first and second output signals ( T IR, f), compute at least two characteristic parameters indicative of presence or absence of the body part, the control unit is configured to, when presence of the body part is determined based on the at least two characteristic parameters, set a current temperature ( T skin) of the body part to a current temperature value given by the first output signal ( T IR) only when all of the characteristic parameters indicate presence of the body part, and the control unit is configured to, when at least one of the at least two characteristic parameters indicates absence of the body part on the end portion, set a current ambient temperature ( T amb) to the current temperature value given by the first output signal ( T IR). a vibration probe with an end portion arranged for engagement by a body part of the subject, a vibrator coupled to the vibration probe and operable to impart a longitudinal vibration to the vibration probe, a force sensor coupled to the vibration probe, said force sensor configured to provide a second output signal ( f) indicative of an application force onto the end portion, an input device, which allows the subject to signal when the longitudinal vibration of the vibration probe is sensed by the subject, a control unit configured to perform the test procedure by operating the vibrator to impart the longitudinal vibration to the vibration probe at different intensities at one or more frequencies, and receiving an input signal from the input device indicating when longitudinal vibration is sensed by the subject, the control unit being further configured to monitor, during the test procedure, the second output signal ( f) to ensure that the application force is adequate, characterized in that the apparatus further comprises a contactless temperature sensor arranged to face the body part when engaged with the end portion, said contactless temperature sensor configured to provide a first output signal ( T IR), the control unit is configured to, before the test procedure and as a function of the first and second output signals ( T IR, f), compute at least two characteristic parameters indicative of presence or absence of the body part, the control unit is configured to, when presence of the body part is determined based on the at least two characteristic parameters, set a current temperature ( T skin) of the body part to a current temperature value given by the first output signal ( T IR) only when all of the characteristic parameters indicate presence of the body part, and the control unit is configured to, when at least one of the at least two characteristic parameters indicates absence of the body part on the end portion, set a current ambient temperature ( T amb) to the current temperature value given by the first output signal ( T IR).