A biometric system (10) for assisting a user in providing a biometric reading is described. The system (10) comprises: a biometric capture unit (12) for capturing biometric data from a user; and feedback means (30) for providing the user with an indication of the extent to which a measurement has been captured. The feedback means (30) may be implemented by a display, a loudspeaker (508), or both. The system may also include anonymizing means (66) for providing the feedback means (30) with an anonymized version of the data measured from the biometric capture unit (12).