Biometrics are increasingly being used to ease and facilitate authentication. But they require a lot of tuning to reach an acceptable level of balance between false positives and false negatives.
This story illustrates that while HSBC may have tested many parameters, voice authentication may have some way to go.
BBC Click reporter Dan Simmons set up an HSBC account and signed up to the bank's voice ID authentication service. HSBC says the system is secure because each person's voice is "unique". But the bank let Dan Simmons' non-identical twin, Joe, access the account via the telephone after he mimicked his brother's voice. The bank said it would "review" ways to make the ID system more sensitive following the BBC investigation.