Disruption Beacons

[D&B]

Basically, any teleportation done in a radius of these beacons is distorted, thus it can be used to defend areas against telescience or magical teleportation.

However, in magical cases, the caster will instead be sent to a different location, or the spell might malfunction and create random effects around the caster.

[Screemonster]

If we had these and stuck one in the armory then the shittery that got telesci removed from the map in the first place might have been headed off at the pass.

[Dr_bee]

Goonstation does this, it prevents certain telescience memes, not that telescience memes are a problem when you know exactly where the telescience area is. that and telescience teleports have a unique and noticeable sound and animation to tip you off.

[christ110]

How about a bluespace disruption beacon, that fits underneath floortiles, and draws power from a wire below it to cause telescience and stuff to fail. however, when fully upgraded with a quad capacitor, a telepad should be able to ignore the disrupter.