tardas said:i want to generate a number that is unique for a machine.
I decided to get hdd serial. But i have to find more than that.
which hardware numbers can i take? how?
Please do not multi-post (the placement of the same message independently in
multiple newsgroups). It fragments the thread and frustrates folks who are
trying to help you.
If you absolutely feel the overwhelming need to reach multiple groups, which
you shouldn't usually, then cross-post (place the same message into multiple
groups at once using multiple addresses on the same copy of the message so
that all replies are seen by all groups).
Usually it's better to pick the one group that fits. Read the groups' FAQs.
...i know how to use groups.
tardas said:thanx lew. i know how to use groups.
tardas wrote:
..
(re. multi-posting)
The evidence suggests otherwise.
tardas said:i want to generate a number that is unique for a machine.
I decided to get hdd serial. But i have to find more than that.
which hardware numbers can i take? how?
Software should work across various platformsplatforms?
Software should work across various platforms
for Intel CPU, there isa CPU serial number you can get at via JNI. See
http://mindprod.com/products1.html#CPUSER
--
Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com
steve said:only if it is enabled in the bios.
Lew said:Thus your "Write Once, Run Anywhere" code becomes non-portable even down
to the hardware level, much less the OS level.
AFAIK there is no inherent unique identifier for a computer, at least
none assigned by an outside authority with a promise of uniqueness. In
the case of the Intel CPUID, the public reacted negatively to the
proposal and it either died or went underground. Does the chip even
still have it? Is it enabled or disabled by default?
Looks like you'll have to create your own.
I think the nearest you can come is the hardware address in an EthernetLew said:AFAIK there is no inherent unique identifier for a computer, at least
none assigned by an outside authority with a promise of uniqueness.
>
I think the nearest you can come is the hardware address in an Ethernet
card - IIRC that's guaranteed to be unique, rather like the IMEI in a
mobile phone. However, cards can be swapped, a computer may have more
than one Ethernet interface or it may be using a modem and not have any
Ethernet cards installed at all.
Last but not least, there seems to be no way to access the card's
hardware address within standard classes so you'd need to use
non-portable native code to read it.
The duplication had passed me by (and isn't surprising) but I'd alwayssteve said:sorry even the Number in the E card are not unique, there was a **** up
several years ago, that resulted in several brands of card having the same
sequence of numbers.
That said , the number can be changed by a small c program, , hackers use
it frequently to hide the nic address/number
The duplication had passed me by (and isn't surprising) but I'd always
thought the number, once assigned was permanent. I live and learn. Thanks.
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