Readers reply: Experts say we should use passkeys, but can a smartphone pin really be safer than a password?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts This week’s question: Is ‘ripen at home’ fruit the supermarkets’ idea of a joke? I’ve been struggling to get my head around the idea that a passkey, which can be a pin on your phone, or facial recognition, can be safer than using a complicated password and two-factor authentication. I get that having something unique to...