"I'm not sure what strips you're referring to. AFAIK, an ILS has two
systems, both of which are radio-based - the localizer which gives you
a lateral directional reference and the glideslope which is an aid for
vertical descent."

Hi

Well I refer to the markings on the taxiway, parallel to the RWY, perpendicular to the TWY, (dashed or dotted lines if I remember correctly), which are supposed to have something to do with CAT II/III approach.
Hope that helps!?

John