@Angel: what you did wasn't intentional, so good interaction design should
have 'warned' you in some way. From a Service Design point of view such
"excessive-usage"-fees should be forbidden :-)

Designing around unintentional misusage isn't the same as fighting
intentional abuse. The first can be prevented with interaction and
industrial design. The second is a lot tougher, but Interaction Design could
help there too, mostly in protecting a potential victim. On banking sites
(in the Netherlands) you have always have to input a random number when you
want to send a payment. The random number makes it harder to misuse the
system, how well it works depends on interaction, but unfortunately such
security systems must be used.



On Thu, Jan 8, 2009 at 10:42 PM, Angel Marquez <[email protected]>wrote:

> Would this account for abuse:
> http://mypfblog.blogspot.com/2007/05/excess-activity-fee-at-wamu.html
>
> This was about a month ago and the web UI allowed me to deplete my account
> of over 75.00 of fees in one sitting with absolutely no destructive
> confirmation screen.
>
> The excessive fee was enforced right about when wamu was going under.
> ________________________________________________________________
>
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