In article <4e77254c.6070...@druck.org.uk>,
   David J. Ruck <dr...@druck.org.uk> wrote:

> On 19/09/2011 11:53, John Williams wrote:
> > In article<a3cf1d1552.pnyo...@pnyoung.ormail.co.uk>,
> >     Dr Peter Young<pnyo...@ormail.co.uk>  wrote:

> > An interesting fact is that these 'little keypad
> > thingies' are all the same, just badged differently. 
> > So if you need to, you can use someone else's - away
> > from home, for example.

> > Anyone wishing to discuss this, take it elsewhere, as
> > it's off-topic here.

> Not wishing to discuss it, only to correct inaccurate
> information:-

> You can't use someone else's, as each has a serial number
> which needs to be registered in order that the remote end
> is using the same seed for the random number generation.
> DO NOT allow anyone else to see your serial number, as
> following the RSA breach, the system is compromised.

While they are not all the same, some certainly are
identical.

I am sure that Druck's comment applies to the device I have
from Citibank Belgium, as I had to confirm the code off the
back to the bank before it was activated. This device is not
a card reader, it just generates a code after input of a
registered PIN.

On the other hand, my German bank recently provided a card
reader / code generator. Before sending me one they asked if
I already had, from another bank, such a device marked V1.4,
as, they said any such device would work. This device is
quite unlike any other I have seen, as it has optical input,
though it can be used manually too.

I suspect that both the Royal Bank and NatWest ones I have
are interchangeable, though I have not tried. The Nationwide
one does seem to have similar keys, though the mode of
operation is different.

The two Swiss ones I have are not interchangeable - putting
Bank A's card into bank B's machine gies a "wrong card"
error.

-- 
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