A method of identifying a biometric record of an individual in a database, the database comprising at least first and second sets of records, each set comprising at least one record, each of the at least one record comprising a plurality of biometric samples, wherein the plurality of biometric samples comprises a biometric sample of a first type and a biometric sample of a second type different to the first type, and wherein the method comprises: receiving by a processing device at least first and second input biometric samples of said individual, wherein said first input biometric sample is of the first type and wherein said second input biometric sample is of the second type; partitioning said database into a first partition comprising said first set of records and a second partition comprising said second set of records based on a combination, for each record of said database, of a quality measurement of the first input biometric sample of the first type and a quality measurement of the biometric sample of said first type of respective each record; performing on the records of said first set a first matching process comprising performing a first filtering operation on the records of said first set followed by a second filtering operation on the remaining records of said first set, and performing on the records of said second set a second matching process comprising performing said second filtering operation on the records of said second set, followed by said first filtering operation on the remaining records of said second set, wherein said first filtering operation comprises comparing said first input biometric sample to a first reference biometric sample of each record, wherein said first reference biometric sample is of the first type and said second filtering operation comprises comparing said second input biometric sample to a second reference biometric sample of each record, wherein said second reference biometric sample is of the second type, and wherein said first filtering operation comprises at least one filtering threshold and said second filtering operation comprises at least one filtering threshold, wherein the filtering threshold of the first filtering operation is determined based on the combination, for each record of said database, of the quality measurement of the first input biometric sample of the first type and the quality measurement of the biometric sample of said first type of respective each record; and identifying a biometric record of said individual based on results of the first and second matching processes. receiving by a processing device at least first and second input biometric samples of said individual, wherein said first input biometric sample is of the first type and wherein said second input biometric sample is of the second type; partitioning said database into a first partition comprising said first set of records and a second partition comprising said second set of records based on a combination, for each record of said database, of a quality measurement of the first input biometric sample of the first type and a quality measurement of the biometric sample of said first type of respective each record; performing on the records of said first set a first matching process comprising performing a first filtering operation on the records of said first set followed by a second filtering operation on the remaining records of said first set, and performing on the records of said second set a second matching process comprising performing said second filtering operation on the records of said second set, followed by said first filtering operation on the remaining records of said second set, wherein said first filtering operation comprises comparing said first input biometric sample to a first reference biometric sample of each record, wherein said first reference biometric sample is of the first type and said second filtering operation comprises comparing said second input biometric sample to a second reference biometric sample of each record, wherein said second reference biometric sample is of the second type, and wherein said first filtering operation comprises at least one filtering threshold and said second filtering operation comprises at least one filtering threshold, wherein the filtering threshold of the first filtering operation is determined based on the combination, for each record of said database, of the quality measurement of the first input biometric sample of the first type and the quality measurement of the biometric sample of said first type of respective each record; and identifying a biometric record of said individual based on results of the first and second matching processes.