I think Elstoko made some kind token-type signaling system if I remember correctly.
<kuid2:368725:90035:10> Staff-transfer track, for avatar operation
<kuid2:368725:60008:3> Wait until staff
<kuid2:368725:15000:10> Safeworking Officer
<kuid2:368725:90019:13> Point Lever, ground, for avatar operation