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Scan
From Liquipedia Dota 2 Wiki
Scan is an ability usable by any player that scans a targeted area on the map, detecting all enemy heroes within the target area.
Defensively, Scan can be used to check whether an area is safe or not, for example by revealing an enemy gank attempt. Offensively, it can be used to find enemies within the Fog of War to gank them. Enemies have absolutely no indication that they are being detected by a scan.
Scan can be activated by any player with a button at the right of the minimap or a Hotkey defined in the settings. The Scan charges and charge restore time are shared by the entire team, meaning if one player uses it, it goes on cooldown for all players of the team.
Scan
[edit]Point
Affects
Self
Scans a target area for a few seconds. Indicates whether there are enemy heroes in that area via a minimap indicator and audio cues.
Cast Animation: 
0 + 0
Cast Range: Global
Radius: 900
Scan Interval: 1
Duration: 8
Does not start with max charges on match begin.
Initial Charges: 1
210
2
0
0
- Alt+
Left Click informs the team of its cooldown state.
- Alt+Ctrl+
- When a hero is detected, the green (blue in color blind mode) minimap indicator turns red.
- Detects enemy heroes under the effect of Smoke of Deceit.
- Treats illusions and the Spirit Bear as heroes.
- Does not consider invulnerable or hidden units.
- Does not consider creep-heroes.
- Detects Invisibility enemies.
- Checks for enemy presence in 1-second intervals, starting immediately on use, resulting in 9 checks.
- Does not show how many heroes there are, just if there are any enemy heroes.
- Does not grant any vision or reveal anything other than the presence of enemy heroes.
- The button is located at the bottom right corner of the minimap border, above the Glyph of Fortification button.
On hidden entity
Version History
[edit]Description
- Scan no longer triggers on creep-heroes.
- Scan now has 2 charges that have a 210-second replenish time.
- Starts with 1 charge on match begin.
- Created Telescope.
- Added Prescient Aura.
- Radius: 1200
- Scan cooldown reduction: 50%
- Reduced cooldown from 270 to 210.
- Created.
Patch History
[edit]Description
- Scan particle effects now also appear within the world, rather than just within the minimap.
- Fixed Scan icon sometiems being greyed out even when charges are available.
- Fixed multiple casts of Scan failing to draw their visual effects separately in interfering with each other.
- Scan
- Updated ability icon.
- Updated ability backend strings.
- Scan
- REMOVED
dota_silent_scan.
- Scan
- ADDED
dota_silent_scan. - If set to 1 (true) will silence sound effects when Scan is initiated and if a Scan detects enemy heroes.
- Scan can now be Alt+
Right Click to inform team of its cooldown state.
- Ctrl+
- Ctrl+
- Announcer now has response rules for usage of Scan.
- Response rules have been added for the right and wrong usage of Scan.
- Added spectating view for Scan.
- Fixed Scan not working on spell immune heroes.
- Adjusted the blue color for Scan in color blind mode.
- Scan now supports color blind mode.