The technique works by "exploiting small, microscopic deviations in device hardware: clock skews." In practice, Kohno's paper says, his techniques "exploit the fact that most modern TCP stacks implement the TCP timestamps option from RFC 1323 whereby, for performance purposes, each party in a TCP flow includes information about its perception of time in each outgoing packet. A fingerprinter can use the information contained within the TCP headers to estimate a device's clock skew and thereby fingerprint a physical device."

said by DonLibes :

This should be easy to block. Just run a little daemon that randomly adjusts your system time (backwards and forwards) by a few milliseconds every so often.

...and we show how one might use a Fourier transform on packet arrival times to infer a device’s clock skew.

said by Doctor Olds :

"..If man can think it up, another man can think a way to undo it. .."

said by AMDUSER :

Things could get intresting, although it seems unlikely that ISPs would impliment something like this; at least for the time being anyways.

said by sman83 :

From how I read is it possible to just turn off timestamps in the tcp/ip? Then no more detection