Scan ( ability ) Scan , also known as Sense , Sensor , Gauge , Piercing Sight , Observe , Analyze , Study or Sense Weakness , is a recurring ability in the " Final Fantasy " series . It is a command ability that exposes the stats of enemies , such as HP , MP , and elemental affinities . It is sometimes associated with the Scholar and Blue Mage jobs . Scan should not be confused with Libra , which has been translated as Scan in early games . The key difference is that Libra is usually a spell while Scan is a command ability , and Scan occasionally has a more potent effect , such as working on all enemies at once or removing an enemy ' s status buffs similar to Dispel . Appearances . " Final Fantasy III " . The Scholar class can use Study that reveals the enemy ' s stats and Dispel s the enemy ' s positive statuses . The enemies Xande ' s Clone and Xande can use the spell against the party . " Final Fantasy IV " . Cid ' s ability is Analyze , called Peep in the SNES version and Study in the " Anthologies " release . Analyze has a Charge Time of 0 . In all but the 3D releases , it functions the same as Libra , revealing enemy stats and weaknesses . In the mentioned releases , Analyze affects all enemies at once instead of just one , and continues to display their stats for the duration of the battle . " Final Fantasy IV - Interlude - " . Analyze returns as Cid ' s ability in the sequel of " Final Fantasy IV " , functioning the same way as it did in the previous game . Cid and Luca have Analyze , which functions in the same manner as Libra , revealing a single enemy ' s stats . Analyze has a Charge Time of 0 . Harley is able to use Piercing Sight as a command ability , and it too has a Charge Time of 0 . It gives an enemy a random elemental weakness and removes all status enhancements from them . " Final Fantasy V " . Blue Mages have Check / Observe as their level 1 job ability , which reveals an enemy ' s HP . Their level 4 ability is Scan / Analyze , which functions identically to Libra . " Final Fantasy VII " . Sense displays an enemy ' s current and max HP and MP , which remain in the information window for the rest of the battle . It also shows the enemy ' s level and weaknesses , but these do not show up after the initial use . Enemies that have 30 , 000 or over max HP cannot be sensed . The Sense ability is the first and only ability of the Sense Materia . Red XIII has Sense equipped when he joins , and one can also be found on Sector 6 park in the Midgar Slums after Sector 7 ' s destruction . Sense Materia can also be bought at Junon before the party acquires the " Highwind " . The Master Command Materia also includes the Sense ability . " Final Fantasy IX " . Detect is a Skill learned by Zidane from the Mage Masher or Orichalcon for 40 AP . Detect reveals what items the enemy has to Steal . " Final Fantasy X " . Sensor is an auto - ability that allows the player to view an opponent ' s current HP , maximum HP , and elemental resistances whenever targeting an enemy . As long as a character with the auto - ability customized is present in the active party , any character can view the information when using single - target attacks . Sensor can be customized onto a weapon by using two Ability Spheres . Aeons , Dark Aeon s , Special Monsters in the Monster Arena , and multiple enemies located in the Omega Ruins are immune to Sensor . The Scan ability found in Kimahri ' s section of the Sphere Grid is more akin to the Libra ability of other games . " Final Fantasy X - 2 " . Unlike other games , Scan and Libra function near - identically , both being Main Commands , with the exception that Libra allows manipulation of a target ' s model , as well as being able to switch targets while casting . Scan can be used by the Gun Mage dressphere and Rikku ' s Machina Maw , while Yuna ' s Floral Fallal can use Libra . Additionally , Scan on the Gun Mage can be upgraded , though it serves merely cosmetic effects ; Lv . 2 Scan allows the player to manipulate the target ' s model , and Lv . 3 Scan allows Scan to target allied units . Paine ' s Full Throttle can use Ma ' at ' s Feather , which has the same effects as Scan and Libra . The ability ' s Japanese name serves as a pun , as it has the same meaning as Scan ' s Japanese name " Miyaberu " . " Final Fantasy XI " . Gauge is usable by the Beastmaster , starting at level 10 . The ability has a short recast timer , only 30 seconds , and it allows a player to see if they would be able to Charm a particular creature . and tells them how likely Charm is to be effective . " Final Fantasy XV " . Analyze is a Teamwork ability for Ignis . It attempts to inflict Libra on one enemy to expose their strengths and weaknesses , using scan time as resistance value . No weapon requirement . " Final Fantasy Tactics Advance " . Sensor is an A - Ability for human Soldiers . It is learned from the Burglar Sword for 300 AP . When used , it shows concealed equipment , but only to enemy units that have " Item " as a secondary A - Ability . Soldiers have Gauge , which allows the user to detect level 1 treasure / Loot on an enemy , learned from the Burglar Sword for 150 AP and having a range of 4 . The Scholar ' s Study , learned for 150 AP from the Battle Folio and having a range of 4 , shows a target ' s treasures , items , and gil . The Ranger ' s Awareness , and Al - Cid ' s Interrogate from his special job , Agent , have the effect of revealing hidden traps and invisile units . " Vagrant Story " . Analyze is a Sorcerer spell learned from the Grimoire Analyze , dropped by Dragon at the Sanctum ' s Cleansing Chantry . Analyze reveals the parameters and stats of the target , which can be viewed from the Status menu , and scrolling between the enemies with the L1 and R1 buttons . The spell costs 5 MP , however , casting it does not mean the spell would be 100 % successful ; the hit rate percentage depends on the value of Ashley ' s Risk , and is calculated below : " Bravely Default " . Examine is a Miscellany ability learned by Freelancers at job level 1 . It displays the enemy information including HP , elemental weakness , and family . " Final Fantasy Dimensions " . Sense Weakness is Matoya ' s ability found under her Third Eye skillset . " Dissidia Final Fantasy " . Scan is a Story Mode skill . When used on a locked area , it identifies what Battle Piece ( s ) need to be defeated to unlock that area . " Final Fantasy Brave Exvius " . Analyze costs 1 MP and allows the player to see an enemy ' s level , their amount of HP left as well as elemental and status resistances . By casting it on an enemy and subsequently defeating it , that monster ' s description will appear as complete on the Bestiary . The following units learn Scan : Bartz at level 1 ( 3★ ) , Lid / Black Cat Lid at level 6 ( 3★ ) , Eldin at level 1 ( 1★ ) , Gimlee at level 2 ( 1★ ) , Montana at level 8 ( 2★ ) , and Zidane at level 9 ( 3★ ) . Any other unit can access this skill by equipping the esper Siren ( 1★ ) , if she has learned the skill by spending 10 SP . Etymology . " Miyaberu " means to see through and expose something . " Shiruberu " bears a meaning closer to studying and examining something .