SecurID - 8-digit codes?

From: Philip Pemberton (philpem_at_despammed.com)
Date: 09/27/03 

Date: Sat, 27 Sep 2003 12:30:43 +0100

Hi,
  I've just been playing around with the "I. C. Wiener" SecurID code
(wrapping it up into a C++ class, that sort of thing). What I do find
interesting is that RSA claim that the SecurID key length is not fixed at six
digits - it can vary between six and eight digits. Does anyone know how the
SecurID token generates an 8-digit code or, more importantly, how it decides
when to generate an 8-digit code instead of a 6-digit code?
  Is it possible to have a 7-digit SecurID code?

Thanks. 

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