User can sense the presence of energy, whether they are electromagnetic (magnetic/infrared), psionic, magical, spiritual, etc. and possibly gain detailed understanding about the energy they are sensing, including the amount/size of energy they are sensing and whether it is hidden.
...to sense and track any and all monster energy within a several thousand mile radius.
Charmcaster (Ben 10: Ailen Force)
Knuckles the Echidna (Sonic the Hedgehog), can sense the chaos energy of the Chaos Emeralds, the Master Emerald, and similar objects like Sol Emeralds, and can track down their "signals", making him a living Emerald Detector.