GURPSよろず

see p. B48
探知 is extremely common in fiction, where it typically takes one of three forms:

Extended Senses:
探知 can emulate almost any kind of believable remote sensing. Senses like 探知 (Magnetic Fields) and 探知 (「電波」) suit realistic robots and vehicles as well as supers. Signal Detection (+0%) is common for such abilities.

Para-Senses:
探知 might instead sense ordinary things that would realistically defy discovery without physically searching the area or taking a sample; e.g., 探知 (Cats), 探知 (Disease), 探知 (Gold), or 探知 (Poison). Such abilities might be superscience or a form of supernatural divination.

Supernatural Awareness:
探知 could be a supernatural sensitivity to otherworldly forces; e.g., 探知 (Magic). It might even sense moral concepts. What this means is up to the GM --a zombie or serial killer might trigger 探知 (Evil) in some worlds but not others. Moral powers always set it off, however.
How 探知 presents information to the user is a special effect. Someone with 探知 (Magic) might experience magic as a glow visible through intervening obstacles, a scent, an odd foreboding, or anything else he likes.

■代案
探知 doesn’t provide the capacity to comprehend transmissions or see by the “light” they provide, even if it can locate them and analyze their composition. Such capabilities are separate 有利な特徴. For instance, 探知 (「電波」) and 探知 (Infrared) can locate radio signals and heat sources, respectively --but you need 「電波」 (p. B91) to understand radio signals and 「赤外線視覚」 (p. B60) to see by infrared radiation.

■追加特別増強
Analyzing:
Your sense has an extremely high resolution, like a superscience scanner. Basic analysis is automatic if your Sense roll succeeds.
Only make a separate IQ roll if you opt to do a detailed analysis. Success reveals details such as the form and purity of the item sensed, its precise subclass, etc. This is incompatible with Vague. +100%.

■パワーアップ
Any power might have 探知 for its own focus or an opposed one. For the purpose of 「探知」, treat a single focus or power as “Rare,” a single power source as “Occasional,” a group of related sources (e.g., all supernatural powers) as “Common,” and all powers as “Very Common.” 才能 affects Sense rolls to use this ability and IQ rolls for analysis.