|Ghost: Shinobi||Tier 3|
|Basic (3 pt): Your ECM jammer and feedback duration is increased by 25%.|
|Ace (6 pt): Your ECM jammer can now also be used to open certain electronic doors.|
Along with Lockpicking Expert, this skill is one of the ghost's entry skills. It grants silent access to doors that are locked with a keycard reader. These rooms are used on Framing Frame Day 1 as a camera room, on Election Day Day 1 as the computer room, on Election Day Day 2 (Plan C) as a camera room, on Bank Heist as a camera room, on Firestarter Day 2 as the server room, and on Big Bank as a server room. Gates that are locked with a keycard reader, as on Shadow Raid or Election Day Day 2 Plan A cannot be opened by an ECM jammer, even if this skill is acquired.
The basic version of this skill is highly useful for frequent ECM users or to allow more effective ECM rushes. The additional 25% duration (which equates to roughly 5 seconds), is indispensable in an ECM rush. The aced version of this skill is also the second best way to silently open security doors, with the only other silent alternatives being a keycard (which is ideal, but sometimes impossible) or a drill upgraded with Silent Drilling by a technician. Of the two, the ECM jammer is superior as it is far faster than the drill and will never be detected by a guard (although the open security door or the contents of the security room may alert some guards, as with the server room of Big Bank and Big Oil).