In message , alan_m
writes
On 12/01/2021 22:34, Andy Burns wrote:

I've made one amazon order this year, and none of this SMS malarkey
...

It may depend on what you do. You may see the security kick in at
random, when changing from the normal payment method (new card etc.) or
changing delivery address.

For instance, one building society account I have only seems to want
the extra security when transferring money out of the account but not
for logging in for checking etc.

If I ever get logged back in I plan to delete my mobile number and give
them the landline:-)

--
Tim Lamb