MICROWIRE!!!
You sir are amazing! Thats the stuff that allows you to carry hundrets of metres of rope in a smal package right?
Hm that gets me thinking... if you string that stuff along some sturdy posts at knee level... that should hurt a bit too right? It is pretty strong for its diametre isnt it? (Off the top of my head I think it could hold 100kg or somethin like that?)
Edit: How DO you handle Monowire? Was it explained somewhere, maybe one of the books focusing on security measures?
Microwire will cut through your hands if there is tension on it, but not quite like monowire.
Same thing if it is strung as a trip wire. Run into it hard enough and it might cut through the skin and hurt, but won't cause serious wounds. It'll stop cutting when it reaches bone and then the victim will trip over it.
Monowire would cut if they just walked into it, and would likely go right through flesh and bone if they hit it at any speed, and they wouldn't fall down until their legs came apart under them. It is much more expensive, not nearly as strong, and not nearly as useful though, because it is so much more dangerous to the user and if someone with enough armor walks into it it will just snap, where Microwire could still trip them.