On Tuesday 14 May 2013 22:27:23 Alex Malyushytskyy wrote: > Such things are normally resolved using MAC address on any system, which is > unique for every network adapter, > But there always may be a system which does not have network adapter, have > a few network adapters or does not let you to obtain MAC address unless you > are a root (Linux) > > I do not think Qt support this, but if not counting some complications > listed above, native for system code you will have to right is easy.
You can get MAC addresses via QNetworkInterface::allInterfaces().
Some encouragement: 99.9% of all PCs and Laptops do have a network card and/or
Wireless Interface. Unless you target the 0.1% of non-networked machines you
can assume to have one (even if it is unconfigured). At the very least if your
app has network access then you can assume ethernet (modem-only machines are
exceedingly rare these days).
Some words of caution: MAC addresses can be changed in software. Depending on
your paranoia level you may not want to rely on them - in that case you may
want to think about hardware dongles to secure your app.
Konrad
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