Renfield Kuroda <Renfield.Kuroda@msdw.com> wrote:
>
> rolf van widenfelt wrote:
>
> > otherwise, someone will soon devise the "monthly bill expander" midlet
> > which quietly transfers as many packets as possible while acting very innocent...
> > hundreds of yen in just a matter of seconds...
> > ooh that could hurt!
>
> Unless the midlet has the magical ability to speed up the network, I don't think any
> midlet, no matter how malicious, can rack up charges of hundreds of yen in a matter
> of seconds, even assuming perfect throughput of 9600bps with a charge of 1
> yen/packet:
admittedly, i exaggerated :-)
how about in a matter of tens of seconds then?
still, my point is that it would be useful if the keitai user
could see that transmissions were occurring (while running the java midlet),
and, as you hint at below, be able to stop it quickly.
no one has yet mentioned whether i-mode phones have any kind of
indicator or LED for packet traffic.
-rolf
>
> 1 packet = 128 bits = 1 yen
> 9600/128 = 75 packets/second = 75 yen/second
>
> But since the real charge is 0.3 yen/packet, max possible charge is less than 1/3
> that, or no more than 25 yen/second.
>
> However I do agree that a malicious agent could theoretically connect for hours on
> end (say when you're sleeping) and cause some financial damage.
>
> I am assuming (and have heard rumors of) failsafes on the handset, for example on a
> folding handset the agent function only works when the phone is open, etc...we shall
> have to see...
>
> r e n
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Received on Mon Jan 22 05:32:21 2001