I think i know what you are talking about....requires some strips to be installed or something? I am not sure how well that would look with a cabinet?
It looks perfectly normal with a cabinet.... There are several ways to do it.
1) Make them obvious, like "House of the dead 2 3 4 and now 5" or like "Time Chrisis 4" or like several other current games.
2) hide them behind the bezel and only have the tips of the Infra Red LEDs on show.
3) They also work perfectly well behind smoked glass too, because they're infra red, just like a TV Remote... So if you have smoked glass you can hide them behind that and not see them at all.
Looks fine any way.
Best Regards,
Julian (Fozzy The Bear)