A merit factor of around six seems to, arguably, be the highest achievable value. Hodeln
and Jensen in  even went as far as making the conjecture “that asymptotically the maximum
value of the merit factor is and hence that offset Legendre sequences are optimal.” There has
been some promising work done to show that merit factors slightly greater than six exists in
binary sequences  but they are still far from the theoretical largest merit factor, found by
Golay in , of approximately 12.32.
Factors like autocorrelation, cross correlation, and merit factor should be taken into
consideration when developing a communication system that requires the use of binary PN
sequences. PN sequences are still far from reaching the theoretical maximum that was once
proposed. However, as discussed in the next section, SESS binary spreading system does not
use PN sequences, it uses the randomness of the data being sent. Therefore each transmission
would have different auto correlations and merit factors based of the data that is sent. There it
does not apply to these complex factors by which conventional spreading system are judged.